Is possible to do 2 paid part time research assistant in the same term

Next term is my last coop term and I already got a job. I also want to work as a part time research assistant at school; however, there are 2 professors agreed to be my supervisor in last term, they are from different fields (one is math, another is CS, both are my favourite and it’s hard to choose between them). I want to know if it’s possible to do 2 part time RAs at the same time? Anyone has experience about this?