2 simultaneous but separate calls: possible?

Hello,
I want to be able to be on 2 calls with 2 people at the same time (from my phone). However, I don’t want those people to hear each other (apart from the sound spill on my phone). I want both to hear me and be able to speak to me without merging, or putting anybody on hold. Would that be possible? Would that be possible with Jitsi?

Thanks for any advice