so ended up booking the CX 3:20pm departure with incoming MH flight scheduled to land 2:05pm. This was because I received new information (i.e. MH now allowing people to through check onto OW partners)
Incoming got delayed by ~35mins and only ended up at the gate at 2:47pm and CX flight boarded and departed early! Was met at the gate by a MH (CI really) agent who escorted me to transfer counter + security. They advised luggage probably would not make it though.
Still from bum off MH to bum onto CX was only 10mins! TPE is a handy place to transit if you know what you are doing in my view.