Originally Posted by
Stewie Mac
Don't worry about the terminal A/B bit - that is only relevant when you have to check in (one end of terminal or the other); you will be in international transit, so stay airside and just go through a security check to land you back into the international departures.
Very easy transit, no worries on timings.
Actually, there's both an immigration/passport check and a security check, but other than that I agree. Follow the signs for int'l transit pax and you'll be fine.