Not a wedding, that was 5 years ago, but my sister rings me up with an inane excuse and almost without pausing for my reply, launches straight into her latest doctors/hospial/dentist visit or her upcoming operations, plus her husband's ailments! After the 2nd or 3rd go round, I switch off, say yes or no in the right places.
It is a family joke that we 'never' ask her how she is unless we have an hour or two to spare. Obviously we are there for her if it's serious but to be rung up during your dinner and have to listen, in detail, to skin grafts or worse, body functions malfunctioning is a tad off putting, 