I bought D2R on bnet when it first came out, about a month ago some friends started playing and i downloaded through gamepass. what i wasn't expecting was the gamepass version making a seperate account. so now i have 2 sepperate accounts. i can switch between them by exiting out of xbox and bnet and vice-versa.
my question: is there any way to load and run both accounts at the same time?

You cant run the same bnet account at the same time. But you can link the same bnet account from your pc to your xbox account so you can switch the device at anytime

If you have 2 account, you could run 1 account through your xbox and account 2 through gamepass cloud on a phone or any device, or a second xbox.

personally i have 8 xbox’s for p8 games

I just make my 5 kids play on each of there xbox, they need to earn there keep.