Easy … keep in mind that there’s a bandwidth cap with OB on A4, so you may have to juggle how you recover the fx or pan of a track (main outputs) as you’ll be working with dry mono feeds from the 4 tracks and 2 other tracks (if 24bit)
from there once the tracks are inside digitally it’s just a case of routing them to the outs of your interface, easy in something like Max, probably a piece of cake in any DAW … then you can treat the outs of your interface like a breakout for the voices as per AK
Some brave souls have soldered their own individual out jacks on the A4 as the PCB is ready to be tapped … see here