Hardware Support: B580 compatibility and VRAM pooling with B70 via USB4 eGPU

Hello,
I am planning to add an intel arc b580 via an eGPU usbc4 dock ( for example aoostar ag02) to my existing system running a B70.
Before investing in the hardware ( egpu usbc4 dock), I would like to ask:
Does LLM Scaler officially support the B580 (Battlemage) architecture?
Can a B70 and a B580 be used together as a combined VRAM pool?
Does running the B580 as an eGPU over USB4 affect device enumeration or compatibility with the scaler?
I already have the b580 and b70 i just want to know if it is going to work.
I am using unraid os 7.3 bêta 2 with intel core 9 ultra 285h and 96g ram 5600.
Thank you!