What a summary is actually for is finding testimony when a witness says something different in court. That means citations, and it means covering every statement.
Testimony recorded across several sittings — examination-in-chief, cross-examination, statements recorded on different dates — is the case where manual summarising breaks down worst, because a topic index has to span all of them rather than exist once per sitting. A subject raised early and returned to later has to be grouped, and that can only be done by something tracking it across the whole record.
Testimony is not organised, and a summary that follows the transcript sequentially reproduces its disorder. The output is categorised by subject, so related testimony sits together regardless of where in the record it was given.
This is the axis on which a summary is useful or useless. A summary describing testimony without pointing to it is orientation — you can read it to remember roughly what was said, but the moment anyone asks where, you are back in the record hunting. A summary with page and line references is an index into the record, checkable by the other side and by the court, which is what makes it safe to rely on.
Building a topic index by hand across multiple sittings of recorded testimony is a slow, error-prone task typically left for whenever there is time — which in a busy solo practice is rarely before the next hearing. Processing here runs in the background, and your time goes into reviewing an index rather than constructing one.
Stated plainly, so you can decide with the whole picture rather than finding out mid-case.
Expect to spend real time reading and correcting the output, and budget for it rather than assuming a finished product. The saving is in not building the index, not in skipping the read.
Citation accuracy is the metric that decides whether this is useful, so test it yourself before relying on it. Run it over a statement you have already worked, then check whether the references resolve to the right page and line.
Which testimony is damaging, which is contradictory, and what to do about it are legal judgments. Bayan-Khulasa organises the record so you can reach them faster.
Tell us what you're working with and we'll show you it running on something like it. Nothing to upload.