Recently got transatlantic BA flight.

3 seats at front by exit door with just one by the window taken. In row behind was an old lady who had been brought to the door in a wheelchair.

So everyone sits down, she asks the FA is she could swap. FA agrees. So old lady says good, because its easier for my leg.

I always thought you had to be physically able to sit in an exit row? In the past, I've seen FAs confirm this with passengers.

Fair enough the FA may not have seen this passenger get on with wheelchair, but she didnt ask her, and when she mentioned her leg surely she should have queried it?

Or am I wrong?