Unreleased Christine McVie/Dennis Wilson

[Malc]

Greetings ...
Does anybody out there have any further details on the 'supposed' late 70's compositions by Christine McVie and her then-boyfriend Dennis Wilson (late of The Beach Boys) ?
According to various BB sources the twosome worked on a number of songs during their somewhat turbulent "Tusk-era" relationship (Dennis appears in a couple of small pix on the "Tusk" inner-sleeves) but nothing appears to have ever come to light ... at least not on the BB circuit. Anything doing the rounds on the Mac circuit ???
Thanks !