For me the important part is Peter Rowland’s feedback during the discussion (https://youtu.be/FK-EdF6uxpQ) starting at the 1:11:40 time mark, transcribed below

Peter Rowlands: Your approach is purely generical and purely mathematical. So, if you got three such starting vectors with those conditions presumably you get Maxwell’s equations for those regardless if it is E or B or whatever.

Anton Vrba: That’s why I …. basically, why in the first part I used the vectors a and r, the activator and reactivator, it is just a nice way of introducing it. I have written a paper on the purely mathematical and generic form, that’s where I coined the term bimodal waves.

Peter Rowlands: So, you should get Maxwell equations of any kind.

Anton Vrba: If you have a medium that allows (…) two phenomena and [they] give you the [mutual] induction. If these equations can be used in liquids, say vortex or smoke rings … I don’t know.

Lauri Love: Are you hinting, Peter, that we may see manifestations of this same thing in other context

Peter Rowlands: Oh, yes indeed.