Why overlapping speech is where transcripts earn their keep

Every group recording has its moment where the conversation tips over. A panel discussion, a project kick-off, a disciplinary meeting with four people in the room — someone starts a sentence, someone else finishes it, and a third person adds a caveat underneath both. The audio file does not care. It simply stacks the voices on top of one another and leaves you to untangle them.

This is the part of the work that separates a careful transcriber from a fast one. Anyone can type a single clear speaker. Handling overlap well takes judgement, notation, and a certain stubborn honesty about what can and cannot be heard.

Start by agreeing what the transcript is for

Before you mark a single interruption, know the brief. A clean read transcript for a busy chief executive will strip out most of the false starts and overlaps, leaving the argument intact. A full verbatim transcript for a legal or HR file must show every overlap, because a barrister or investigator may later need to know exactly who cut across whom.

Ask the client, or check the style guide, and record the answer:

• Which level of verbatim is required — clean, intelligent or full?
• Should overlaps be marked in the text, in a footnote, or both?
• Are timestamps needed at overlap points so a reviewer can find the moment quickly?
• Will the transcript be read on screen or printed? Brackets pile up fast on a narrow page.

Notation that shows an interruption without shouting

Most UK transcription houses settle on a small set of marks. Whatever you choose, apply it consistently, because inconsistency is more confusing than any single convention.

• Long dash at the point of cut-off: "I was going to say —" shows the speaker was interrupted mid-sentence.
• Square brackets for simultaneous speech: [overlapping] or [both speaking], placed immediately after the interrupted words.
• Staggered lines or curly braces for two speakers running at once, if your format supports them: it shows the reader that the lines are not sequential.
• Timestamped notes for longer collisions: [00:14:22 — three speakers, words unclear] tells the reader precisely where to listen for themselves.

Use the shortest marker that does the job. A page littered with [overlapping] loses its meaning; a page with none is quietly misleading.

Preserving meaning when words collide

Your job is to keep the sense of the exchange, not to reconstruct a perfect script that nobody actually spoke. If two people say the same thing at once, transcribe it once and note the overlap. If one speaker's word is swallowed but the meaning is obvious from the surrounding sentence, use your judgement carefully — and only where the audio genuinely supports it.

Where an interruption changes the direction of a sentence, keep both fragments visible. "We should wait until —" followed by "No, we should move now" tells the reader far more than a tidied-up version that quietly deletes the first speaker. Group transcripts are often read to establish who said what, and who was not allowed to finish.

Speaker labels matter here too. Vague labels such as "Speaker 1" are fine for a rough internal note but hopeless in a document that will be quoted. Use names where you have them, and a clear key where you do not.

When you cannot hear it, say so

This is the rule that protects your reputation and your client. Never invent words to smooth over an overlap. A confident guess reads beautifully and can be wrong in a way that damages a case, a grievance or a board decision.

Listen three times before you give up. Slow the playback right down, listen on headphones, and if the recording has separate channels, check whether one channel favours a particular microphone. Then, if the words are still not there, mark them plainly:

• [inaudible 00:31:07] with a timestamp, so the client can find and judge it.
• [crosstalk — unclear] where several voices run together.
• [words unclear: possibly "Tuesday"] only when you are genuinely offering a suggestion to be verified, never as a substitute for the audio.

Then add a short note at the top or end of the document listing every flagged point, so nobody has to hunt for them.

Building a house style, and checking your work

Consistency across a project is what clients notice. Keep a simple style sheet: your chosen overlap marker, how you handle interrupted sentences, whether you timestamp inaudible sections, and how you label unnamed speakers. If you work in a team, agree it once and share it — mixed conventions across a long hearing bundle look careless.

Finally, proofread with the audio running. Overlaps are exactly where transcripts drift, because the temptation to tidy is strongest there. Read each disputed line against the recording, confirm your markers, and check that your note on unclear passages is complete and accurate. Done properly, the messiest parts of a group recording become the most useful pages in the file.