??? As far as bittering goes, what matters is the time spent over 80C. If you're only going up to 77C then you won't isomerise and alpha acids, which is the main contributor to bitterness. You will get some bitterness from other chemicals in the hops, but not much.
Although it's commonly said that no-chill effectively adds 20 minutes to the hop timings it's not always true - my estimate for a recent beer I had was that no-chill had added ~8 minutes to the timings, not 20.
@applescrap those Norwegian beers aren't saisons - different yeast, different process, but still within the wider tradition of European farmhouse brewing. This article from Lars Garshol gives a good overview and is worth a read by anyone interested in raw beers :
https://byo.com/article/raw-ale/