The 'third person' may not have been there, but we know he agreed with Jane. What you and the person who said the position of the men was immaterial are misunderstanding is that when witnesses disagree one of them is wrong. Therefore one of them could be wrong about other things too.
I know Redwood never named anyone; was it you who mentioned the name? I said 'if'. I'm sure the Crimewatch programme said the child had been collected from the night cheche, so whoever it was they were heading towards the creche, not away from it.
For those who need to see a map here is one with certain areas marked. Block 4 (where Totman stayed) is labelled next to block 5, which is circled) and the night creche was above main reception. (4 & 5 are the Mini and Baby clubs which were also there in the daytime)

What do you mean by "one of them is wrong". The witnesses make their statements as
they see what happened it is then down to the police to collate and evaluate the evidence from there.
Jane Tanner is the
only witness who witnessed and
reported as soon as she could that she had witnessed a man carrying a child from the direction of the location from which she later discovered a child had gone missing.
Why did the police not follow through on that one?
Missing child. Unidentified man carrying a child from the location.
No yellow alert given the witness sighting but continuing the search for a lost or wandered child ... and briefing the press one might say immediately on a "badly told story" setting the scene for years and years of pain and distress.