We arrived at gate B44 and left from gate A38. The transfer between the two terminals was relatively easy. We had to clear the passport control as we had arrived from Canada. After that down some stairs and through the security scan again. Not sure why this was required as there was no other way to access this area other than from passport control. This could be a hindrance if your connection is too tight as it took us a little bit to get through this checkpoint. After clearing here we followed the signs and took the long tunnel to terminal A. On the way back we arrived at A36 and left from B44. We only had 35 minutes to make the transfer since our arriving flight was late. No problems as we didn't have to clear any security. We arrived at our flight with 25 minutes to spare after doing some jogging to get there. We would do the transfer here again and didn't experience any of the signage issues others have.