Originally Posted by
KARFA
I have done a b2b at DME about 1.5 years ago. I was able to get a bp on the app for the DME-LHR before starting the LHR-DME flight.
Unlikely at DME. DME/SVO have never used mobile BPs. You need a printed boarding pass (PYOBP always works from both DME/SVO) as you need the physical stamps on the boarding pass from security and immigration, in order to board. Transit security/immigration will also stamp the boarding pass.
The mobile app tells you that mobile BPs are not available on this route.