I don't know what they did but saying the man seen by Jane Tanner was leaving the night creche was a rookie mistake imo. Geography didn't seem to be one of Britain's finest's strong points.
Here you go again. You seem to be confusing the evidence.
Tannerman as described by Jane Tanner was walking in a direction eastwards, which was the direction that anyone taking Madeleine from the front of 5A would have come from. After the junction with Rua Dr F G Martins, which Jane was walking up, Tannerman went further along Rua Dr A de Silva
You are talking about Dr Totman who may, or may not, have been seen by Jane.
Jane recollects her sighting as
1) being much earlier in the evening than Totman.
2) She was close to Tannerman, quoted as being only about 5 metres away and she remembered his carrying on, going eastward along Rua Dr A. de Silva. In order for Totman to enter block 6, he had to change direction and go in a southerly direction along Dr F G Martins rather than carry on along Dr A de Silva. That is NOT what Jane saw.
3) Dr Totmans child was wearing bluey coloured pyjamas IIRC, Madeleines were basically creamy white
With the wrong coloured blue Pjays , the wrong direction and the wrong time, I think that Dr. Totman was NOT the man that Jane saw.
Since Dr Totman kindly came forward, how interesting it would be to speak to Jane, and find out what her perceptions are now.