I’ll grant it could be possible but it would be unusual and uncommon..
It's not that uncommon or unusual. If a property owner grants an easement for ingress and egress, there are many times where a grant for the easement to be used for utilities. Or if, in this case, the utility easement was to serve several estates in the subdivision, there could be several dominant estates none of which is the utility.
Since we don't know the facts here there is no need to argue about it.