They're an Australian Electronic band from Tasmania that's been around since the late 90s. The On Pink Floyd album is perhaps more of an EP with 3 versions of "Set the Controls for the Heart of the Sun" and 2 versions of "Julia Dream" and "Cirrus Mirror" and opens with "Obscured by Clouds".
So Martin Kennedy and Steve Kilbey have done a few albums together, the one I'm most familiar with is White Magic from 2011 with them dressed up in their Dinner Suits and Bow Ties. They have another track which appears to be from White Magic album, though was remixed in 2020 which I hear on Chill:
I could be wrong though I tend to think the band began exploring those Ambient avenues with Ummagumma, though they're not strictly Ambient, though demonstrate it on a few of their 70s albums.
Another track from The Church which have those Pink Floyd traits comes from the Pangaea 2009 EP with So Love May Find Us:
It would be interesting to know how Eno left Roxy Music. It states he left due to conflicts of creative control in 1973, I don't know if the popularity of Dark Side of the Moon played a role in that, some sources say he had clashes with Brian Ferry, perhaps it was music direction? Everything just seems to fit in place with Dark Side of the Moon being released March 1973 and Brian Eno leaving Roxy Music July 1973, though it could all simply be coincidence!
