WIFI 6 is still in the early adopter phase. There could be lots of firmware updates or incompatibilities.
Probably no difference. Routers all transmit at a govt limited power level. The problem is not your device "hearing", it is the low power transmission of portable devices that limit distance. The only cure is to have more physical radios and antennas, geographically separated.Which would have the "best" range, of these 2?