Originally Posted by aktchi

Tthis is the decision we are facing. We'd arrive by BA in T5 (from Istanbul). We have to transfer to an AA flight at T3 (to Chicago). We can choose the AA flight 3 hours after the BA's landing, or another one after 5 hours.

We would like a comfortable connection, allowing for reasonable uncertainties, lines etc., with some time for looking around shops. We would not want to be nervous about missing our flight, nor would we want to be bored for hours upon hours (although we would have access to the AA lounge in T3).

In this situation, would you choose 3 hours or 5 hours?