Yes, the Nac-82 is a wonderful pre-amp with 2xHiCaps. It’s difficult at this distance in time to compare it with the Nac-282, since I went via some Nac-52 episodes before downsizing to a Nac-72, improved with various non-Naim boards, and then back to the current pre-amp.
I would say, though, that the rebuilt Chord monos are altogether in a different league for soundstage and detail, particularly on vinyl and analogue FM.
This may or maynot help.
I run a 282 with 2 hicaps. And i use a non maim power amp, fed via a din to RCAs cable. I could easily feed a pair of mono powers amps. Arguably I do, as my MF Nu Vista 300 power amp claim to be 2 monos in the same box.
What @IanRobertM says. The connection of HC1 connected to link1 of the 282 carries both power AND signal. HC2 connected to link2 of the 282 only power. So you need output 2 & 3 of HC1 connect to the 2 power amps. That’s how I had my 282 configured to my NAP300,which is basically also 2 mono amps in 1 box.
See also the Naim connection guide.
Naim make, or at least made and presumably still can, a separate DIN to RCA lead for each channel, I have a pair that I used to use with my Rega power amp. Mine were ex demo from Audio T but I forget which branch, not Reading as I’d have remembered if it was my local.
Just take the example of 282/2×HC/250. Now replace 250 by 300. You just need an extra connection from HC1 to the 300. You can pick any 2 of the 3 available outputs for that. And think of the 300 as 2×Chords. Or any 2 monoblocks.