Ok, folks, so here goes:

I am using a phone conference line so that people can participate in a meeting AUDIO only.

Export phone line as host into an audio mixer.
Output mixer into Vmix.

Works perfectly.

Audio conference needs to also hear the vmix video presenters, who are all on "Video Call" inputs.

How do I send the audio of presenters into the phone mix?
(I have multiple audio mixers available to accomplish this if needed) just trying to figure out how to output this without jacking up the live stream feed.