I will need to make a trip from HKG-NRT soon, but necessarily with a stop in TPE to travel the TPE-NRT sector with a friend.

I understand that if I issue a ticket in HKG for CX 450 and travel HKG-TPE-NRT, I will get one MPC sector.

I also have the option of using the last sector of an ex-TPE issued ticket to go to back to TPE (the entire ticket was TPE-HKG-SIN-HKG-TPE), and then issuing another ticket for TPE-NRT. The questions are these:

1.) If I take CX 450 HKG-TPE on one ticket and then CX 450 TPE-NRT on another ticket, will I get one MPC sector credit or two sectors?
2.) If I take CX 530 HKG-TPE on one ticket and then CX 450 TPE-NRT on another ticket, I will get 2 MPC sector credits, right?