Hi Ron,
thanks for the interest.
It's from a windmill diagonal windoku so a text example wasn't going to show the extra houses. Here's a graphic.
Initial conjugate pair is r45c8. Small coloured dots are peers.
r3c5 is coloured as an exception cell (last cell in b2) with an extra peer at r6c5. This leaves r5c6 as a potential exception cell (last in b5), if it is legal to re-colour the already marked blue peer of r5c8 green, thus eliminating r5c23.
My guess is that it is OK since after posting I followed another path via r2c2, r3c3 to get the same result.
There are so many house intersections in these things that I have seen the same eliminations from different starting conjugate clusters, even when different cells of a house are coloured during the progression of exceptions.
Cheers,
Bryan