Having two 2-ch systems by different manufacturers on the same HW kit?

[Ukraine Visitor]

My current HW setup includes 2 battery packs for parking mode which takes me through the night and most of the weekend with the car driven 1-1/2hrs daily, ensuring full daily charges. I have a 2-ch BlackVue DR900X cam system but would like to add an additional 2-ch setup, possibly by a different manufacturer. Since adding more cams will draw more battery pack energy, I will need to expand to 4 battery packs. However, it's not clear to me if I can actually connect the new 2-ch cam system to the existing HW kit already used by the existing 2-ch cam system. Question: Is this posible? If not, is it possible if the new 2-ch system were to be another BV DR-900X? My second option, it seems, would be to get a second HW kit with 2 battery packs for the 2 new cams and connect that kit to a different fuse tap altogether. Is this a better option? Why/why not? Thanks.