Frankie Miller and Jess Roden were those two "singers' singers" in the mid-70ies that never really made it themselves, but were an inspiration to a lot of their cohorts.
Roger Glover on bass on that Dylan track, needless to say. Nazareth were extended DP family, lots of joint tours with Nazareth opening for DP, Ian Gillan admiring McCafferty's voice, Roger Glover producing the classic albums and hits, Jon Lord guesting on Rampant, Glover playing bass on McCafferty's solo debut, Ian Gillan Band and early Whitesnake opening for Nazareth on US and European tours and McCafferty's sucessor in Nazareth, Carl Sentance, singing in the Don Airey Band as well.