Prasad,
I have done less work streaming wirelessly, so I don’t have a real response there.
However, overheating while live streaming over USB can be an issue. I’ve used fans underneath the laptop I was working with (live streaming to a laptop running a Unity program, developed mostly by this community, and outputting to an HTC Vive headset) and I was able to run the demo for 8+ hours in a warm tech event environment. The USB also added (some) recharging so the camera batteries lasted that long, too.
Here’s some older information on overheating and using regular fans: HowTo: RICOH THETA V 4K Live Streaming With "UVC 4K" Driver For Windows 10
Jesse