I like the reverse direction of BF flow those bubbles want to go UP

I stopped seeing air after 5 cycles .... should I trust that? Several cycles after that, no bubbles, with waiting in between.

I bench bled it unskillfully before installing

now am doing it in the car , pushing the brake pedal with a piece of 2 x 4 with good view of tubes into the reservoir

I totally changed all the fluid ie bled all four calipers maybe three times got some air each time and still have a mushy pedal

also changed all the brake hoses

rebuilt the rear calipers

new metelli master cylinder

wtf wtf wtf