I do comb more a little more often than I use to early on my HHJ.
When I wasn't/didn't, I had matting, tangles, loc'ing and knots due to improperly detangling and not being fully detangled.
I have been able to totally erradicate that by combing with either my Denman D-24 Double Row Detangling comb or one of my Bone Combs.
You have to get those Sheds out otherwise, they will wrap around the other strands and cause locin'g at the NG/Demarcation area especially if you are trying to Stretch. Detangling properly is a definite Must.
So, I do try to comb through at least once per day on Moisturized Hair.
ETA: I don't use direct heat.