I also route my 210 through my 218.

When using Roon, I typically choose the 210 in either the Meridian or Roon app as the source, and control the volume in either app via my iPad/iPhone or MSR.

Not an Actor, nor married to Jamie-Lee Curtis.

#1: DSP5200SE|DSW.2|218|210|506.2|504
#2: Prime/PSU|SOtM sMS-200 Mini NEO SE|Focal Stellia