Hi, my friend and I are arriving SIN at different terminals on the same date, he is flying in with CX, arriving in T1. I am flying with KE and will arrive in T2. My question is are T1 and T2 connected. I mean can I walk from T2 to T1 to meet him, or is there a shuttle bus running between the terminals, and if it does, how late the shuttle bus will be running, we are arriving around 1 am in the morning. Thanks.