Turn display and viewfinder off while using Video to HDMI?

[VicVictron]

Greetings. Well the Subject says it all. But a bit more information.

I use the X-T3 as a webcam / streaming cam and wonder if the OLED on the back screen could get a burn-in because it shows the same picture for hours and days.

Would be nice if the Display and View finder (both) could be turned off after a few seconds until key press or something similar while "recording" to not risk burning in the image. I checked the settings but couldn't find anything that would help me here. Maybe I missed a setting?

Otherwise what would be the best way to ask Fujifilm for a Feature in the coming release?

Cheers.