New stacked airflow question

Question: I have 3 2070s and at the bottom I’ve got a RTX Titan, the Titan’s temperature is rather low most of the time because all the heat from the 2070 above it hits the back plate. Now, with this new cooling system in the 3000 cards, I was planning on getting a 3090 and selling the Titan, if i were to place my new 3090 below a 2070 (that’s usually the one that runs the hottest out of all them three), should I be concerned about the average 3090 temperature being higher than what my Titan used to run for because of the new calling system?