dwardzala
What is the scenario that you are routing a send to an Aux track and the track output and aux track output to the same bus?
I usually do the opposite. I route the output of tracks to an aux track (e.g. to get a submix on top and bottom snare mics) and then send from the aux track to a bus (or busses - e.g. a reverb bus, delay bus, etc.).
I am wondering if the other type of routing could be useful to me.
Dave,
I think you've got two different things going here:
The first scenario has a SEND going to the AUX while the OUTPUT of both tracks go to a bus. You would do this mostly if you've got FX on the Aux track (a 100%wet Reverb for example). Then you would send both the audio track and the Aux to the same bus since they're still the same instrument.
The Reverb Aux would be beneficial as multiple instruments could send to the same reverb tank and all fit in the same sound. It's also helpful in other DAWs that may have a limitation on how many FX you can put in your bin (which is why you would have the Aux Reverb at 100% wet, instead of putting it in your audio track's FX bin at 50% wet).
For your action, routing the OUTPUT (not the 'send') to the Aux, you're essentially using the aux track as a bus.