Twin channel pull-out 4x4 side awnings

Without a link I googled > Twin channel pull out side awning < and saw a few references to this . . . but looks like it is just the normal awning profiles to me ??

Eg. Darche awning

What do you call the normal variety ?
Single track ?

Just had another look, I can see nothing the Darche one in the link aboe will do over a single track model.
What goes in the back track, the opposite pole ?

I can see a point to it if each pole was one piece, folding into each channel . . . but they still have the same telescopic pole, and need this as the angle will always need tweaking for different situations.

To be honest, I feel 99% of these in the ~ $150 to $300 range come from the same Chinese factory.
They all do a similar job, and need the same care in use, mostly peg down to avoid blow overs, and angle down well for overnight use if any rain.