I guess if someone planned to commit murder, an intelligent person might have avoided doing it in their own backyard so where he lived in relation to where the incident took place, when it was only short drive away is irrelevant.
Driving by car from Notting Hill to Putney (depending on where he parked) could have taken less than 30 minutes at 7.00am in 2017 before the 20mph limit was in place from 2020.
Remember the culprit actually ran back along the bridge again after knowing full well what he'd done.
That level of arrogance and uninhibited risk taking is quite extraordinary. A normal person wouldn't push someone in front of a bus anyway, but usually a opportunistic attacker would try to flee the scene.
It looks like he went back to check if the bus got her.
Kind of fits with 'not noticing' he'd hit a cyclist with a motorbike IMO.
Have the police even publicly confirmed they had traceable DNA from the victim?
Touch DNA could easily have been compromised by people touching the victims coat/clothes or brushing it as they helped her up, medical checks etc.