Is there online live streamming with Micro USB port?
how to use Micro USB port for online live streamming?
& is there other way to use Micro USB port?
Osmo's Wi-Fi is often inconvenient because of frequent interruptions.

It would be great to know if this is possible. DJI team, can you help please?

I Don't think it would be able to do that. The gimbal does NOT like ANY pressure or to be touched at all when on. The small weight of the cable might be too much. I was in strong wind once and it started to whine.

This port is another way to remove the footage from the SD card, I doubt DJI will do anything further with this port.