Ukraine

Yes. Given the clarity of the recent images of FPV drones attacking artillery pieces this type was pretty much a given. (artillery is usually 15-20km behind the lines).

Drone flight time depends on how much weight it is lifting and how high up it goes. That looks like a pretty light load so I would guess around 30-40 minutes. Fully loaded at max weight the flight time would be around 10 minutes No way to know for sure without some more data. I imagine they are sending it up high (1000m or more) to avoid it being spotted. They can then send it hovering over the front providing high quality signal far to the rear.