Your MARQ can connect via both ANT+ or Bluetooth to dozens of products but you will need to contact the manufacturer to see what they have to say on their product. It sounds promising as a possibility but I would ask them first to see how wide open their software architecture was designed or if they want you to use their own APP etc which is not uncommon for many products these days.
The form goggles do connect with garmin and works with fore runner and Fenix 5/6. I don’t see support for marq which confuses me. Will reach out to form as well but it seems the form data field needs to be enabled in the marq series.
Since there is a Connect IQ APP involved, you can use the Contact Developer option off to the far right and let them know your MARQ uses the same Fenix 6 series software and inquire if it was an oversight they didn't add the MARQ series too or if it was intentionally omitted after their own testing etc. I hope it all works out. It seems likely you will be able to use their swim goggles with your MARQ.
