no, not part time teaching. part time teaching is different as u would be teaching OUTSIDE working hours.

sharing of expertise is normal as academics are often officially invited through the top channels. meaning top people in university A meets top people in university B and agrees to some form of expertise exchange. i believe even monash practices sharing of expertise, that's why they opened a branch in malaysia. it'll be stupid not to share, bcoz when the expertise are shared, the individuals will become a referred experts. and each time the expert is referred to, it will boost their international ranking in THES.

if u're applying to IPTA, i'm afraid it's a steep uphill climb for u. u need to sort out the unaccredited degree first before going for ur masters. however, u could opt for IPTS that recognizes ur degree. u might fare better there.

yeah, ur options are limited if u wanna venture into this profession.