Originally Posted by
TiHabanero
Was able to solve issue by hanging the bike by the front wheel over a few day period and periodically tapping the caliper and line from the rear brake up to the lever, and then bleed the system.
Honestly, Sram hydro brakes are a PIA when compared to the ease in which Shimano brakes bleed.
Also, picking up the bike by the handlebar and bouncing vertically on the rear wheel works those bubbles up to the levers.