That’s pretty much what I think.
It would not have the local parish priest as the chief celebrant, but as a concelebrant.
I am surprised that such an event would replace a Mass, although such a thing is possible I suppose. I would expect the DL to be at another time, like Sunday afternoon.
Allatae Sunt made mention of the need for Eastern Catholic parish temples in Polish Ruthenia to be available for Latin priests to celebrate Mass, due to the dearth of Latin facilities at the time. I don’t consider the borrowing of a temple a direct latinization (or Byzantinazation, if carried the other way), except that it imposes upon the highly regarded discipline of only one liturgy per altar per day.
But that is something that can be set aside due to need by economia, so I don’t regard it as critical (unless the oft repeated practice tends to change the custom of the Eastern Catholics and they get used to multiple liturgies on Sunday).