The reasn you bench bled it ,is why push all that
air thru the system
bench bled it, install on vehicle, make sure res, is full place cap on top, open lines at master cyl, have someone push down pedal with lines open , when they get to the bottom close lines, repeat till no air comes out usally 3 times snug up lines, now you should have no air in master cyl and lines to wheel cyl. If you want to be sure now bled wheel cyl one at a time starting from the one farthest away from master
