I have a LG display which supports 4K at 60 Hz. I wanted to buy an adapter for my Macbook Air(2018) to use it with my notebook. I am confused about one thing though. I have read that USB-C to USB-C hubs don't exist. So, am I limited to using the one free port left after using one for power to be either occupied by DisplayPort adapters or something else one at a time?
I have seen that Apple and some other manufacturers have a USB-C to multi AV adapter which has HDMI and USB-C both as output but can't find one for DisplayPort. Is this because of higher requirements of the DisplayPort 1.3+ standard which allows it to do 4K 60 Hz not leaving bandwidth for multiplexing the port?