Good evening:
I have an AE ticket with the return portion on UA like this:
PTY - IAH - CLE - ORD - YOW
Yeah, I know, it's wonderful

Anyway, there is a 90 minute connection in IAH and a 30 minute in CLE. I don't think this will be that much of an issue as I believe CLE is pretty small.
My concern is that I only have a 45 minute connection in ORD, and I have to change terminals.
Do you think it is possible to make a 45 minute connection in ORD (it's on a Wednesday at 20:20 if that helps) or will I be spending the night in ORD. It is the last flight of the night to YOW.
AE says all connections are acceptable and want a $90 change fee (of course).
I know I should of checked the connection time more closely when I booked but hindsight is 20 / 20 your know
Cheers.