The "Technology Connections" youtube channel recently discussed awnings too. (And it had more or less the same message as this blog.)
replies(2):
The classic one is the single hose. There are dual hose models.
https://www.menards.com/main/heating-cooling/air-conditioner...
With the installation instructions https://cdn.menardc.com/main/items/media/LUMAC001/Install_In... on page 11 you can see two sets of air inlets - one for the air exchange with outside, and one for the air exchange inside.
Window AC units are preferable to two hose because the compressor side hangs outside the window (and can drip the condensed water) but sometimes you don’t have double hung windows or your landlord doesn’t allow window AC units.