I guess I could go and test in my own car, but since I haven't tested, I don't even know if you can close (all) the rear vents.
But yeah, so my idea was that if rear airflow is anemic, could it be made at least more pointed by, say, closing two vents from the side where there is no passenger (assuming one rear passenger) or alternatively by, say, closing the B pillar vents so that you end up with Model S like situation with central vents - but with more airflow that could then be pointed at rear passenger(s)?
I understand closing front vents helps. I was just looking for more options and/or an alternative that can be controlled from the back.
I got it, and I believe you are correct that closing one of the rear vents will increase flow to the other. But I am also sure not to the extent of closing a front vent, since the rear vents get such little airflow as it is, so closing the other rear would result in a more anemic improvement than a front one. To match the max flow from the 6/7 seater B-pillar, closing 2 front vents is best way to achieve this.