Awkward situation: Groomsman possibly sent shower gift to my parents' house

One of my FH's groomsmen bought a few gifts off of our registry shortly after confirming to us that he had received the invitation to our couples shower that is happening next week. It seems he had them sent to the address on file (my parents) instead of himself. My parents are now asking us if we know whether he bought them for the shower or if they are for the wedding. They don't want to assume because of a horror story from one of my sister's friends who got married a couple years ago: Some gifts arrived at the parents house before the shower and the mother assumed they were for that event, wrapped them, brought them, and was then embarrassed because some of the shower guests told her their gifts were actually meant for the WEDDING and not the shower. I don't want to be in that embarrassing situation, but is it also poor etiquette for us to straight up ask my FH's groomsman whether those gifts are for the shower or wedding?