Thanks! So if I understood you right, whatever coupling does to the fields, it's something doesn't involve virtual Higgs, is that right?

Is it fair to say that both virtual Higgs and 'real' Higgs are two types of excitations of that field, except that virtual particles can't be directly observed?

I find the name virtual particles interesting, since they don't seem to be exactly the same kind of ripples as particles, and physicists frequently seem to disagree on how 'real' they are as a matter of interpretation