All data? Point-to-point is the way it should be working, with minimal housekeeping going to & from the Internet to keep connections ready for any authorized external use. Unless you or someone you shared your camera with is viewing the live stream or playback mode from outside your house, say from your cell phone network. Then you would see everything go to the Internet.
I’d consider a support request to explain this activity. We have heard of malfunctioning cameras in the past that did things like this, but I am not currently aware of a bug that would explain it. The only thing that should explain all data going to the Internet is a share you made, or you being outside the network.