I tried what you suggested and text appeared on the screen saying "This TV does not support the recording function." So, that is that. But thank you for the information.
I recently purchased an LG OLED65C1PUB and I have connected a 128GB USB flash drive to one its USB ports. But I can't figure out a way to make it record live over-the-air tv programs to the USB drive. Does this model have the capability to do this?