Just to throw a cat among the pigeons a bit, does a canon have a chord sequence?

Pachelbel was a mate of J.S.Bach's dad, and a canon is actually written contrapuntally. ie: horizontal melody lines rather than vertical chords - most of the contemporary composers (except the French ones like RAMEAU who did tend to think chordally) wrote in this way and the chords were only created incidentally when the repeated overlapping melody line created a harmony -a canon is like a bit more complicated version of a round, like we used to sing Frere Jacques or London's Burning at school.

Can Ralph therefore be acquitted on a technicality?