Agree with Daycruiser
I agree completely with Daycruiser. DO NOT let them fudge around with your unit. Make them repair it correctly, even if that means a re-do.
Our VERY early off the line 2020 34IK (actually, it's really a 2019.5 with a 2020 VIN) has the Furrion cook top and separate oven below. The oven vent gets very hot while in use, but we've had no issues with the countertop behind it, the valance above or the mini blind. There is a 3" space between the oven vent and the window frame which is countertop.
I believe you have the stand alone range? If it were me, I'd see if they can switch you over to the cook top/oven set up as in the 2019's. There would be a bit of 'reconstruction', but it'd be worth it for safety. When I saw how close that slide in range is to the window in the later 2020's, I was glad we have the cook top/oven set up.
Best wishes for a SAFE and satisfactory resolution.
2015 F350 6.7L SD Lariat 4x4 Crew
2020 CC 34IK w/ dishwasher & TrailAir
2014 21’ Thunder Jet Luxor OB 150 Yamaha & 9.9 kicker
“Hunt, fish, camp, travel, repeat”