No when booking I thought nothing of it actually. 90 minutes is always enough at US airports where we generally connect thru to our next flight. I just got spooked when I read about the wheelchair services at Heathrow. And even tho my mind was put somewhat at ease in the other thread I figured trying to see if we could get ourselves an extra hour at Heathrow wouldn’t hurt. Sorry to offend people with the question...

(my first question was also after having booked our flight already, just to clarify)