GPS via points

[dhwalt]

Is there a method or quick 'n dirty fix for using via points (not waypoint stopovers) in the MMI Navigation app or with Android Auto/Phone?

An example for three places A, B & C. I want to navigate A to B via C - that is via and does not mean a stopover. A simple question but so far I have been unable to find the answer always ending up with stopovers. This leaves me with routing set by the app rather than a user defined route. My previous experience was with a Garmin unit+Basecamp software and by comparison Google Maps is lacking.