I thought that I needed an emacs sub-process to run Telega without it freezing my #emacs #exwm. Turns out I just neeeded a fast internet connection; now that I have true broad-band it works out (after a 30-60 second initialization freeze, which it does in a sub-process, too). Elfeed still seems to choke things down if I don't have it in a subprocess, though. Running "refresh" makes some kind of unescaping loop in the main process.
I was actually wrong about this. Fresh restart on a GB connection this morning and still it froze in the main process.