Using without External Sound Recorder

Hello
I hope you are well.
I am looking to to use these as part of a two camera set up with a Sony FS7 and Sony A7Sii DSLR.
Main audio source will be from radio mics, plugged into the FS7, then I am hoping to sync this up with the A7Sii which will record a guide audio track. There will be no sound recordist/external audio mixer as the main audio source will be recorded along the video files on the FS7. So is it possible to do this just using your bluetooth software on a phone, along with 2 Tentacle units?
Let me know when you can.
All the best,
Sam