When Your Love was released in the UK it was advertised that Luther Vandross was singing background vocals. No matter how hard I listen I can hear no trace of him.

Did he or did he not?

Your Love should have been a massive hit in the UK for Diana but was spoilt by "bad timing."

When it was released just before Christmas 1993 [[even then imo a couple of weeks too late) the One Woman album was aleady massive and people continued to plump for the album knowing the single was on it. In the week leading up to Christmas One Woman sold a massive 200k+.

Had the single been released in advance of the album it would have been HUGE although #14 was respectable enough.