What are conditions to get NPC invasion at Dark Souls 3?
I saw invastion by Holy Knight Hodrick in this video, so I tried to reproduce it. I went to this area and ate Ember... and nothing happend, I waited for 5 minutes at the point the invasion happened in the video, then walked pretty much everywere around this point and still - nothing.
So I wonder what are all conditions to get invaded by NPC? Do you need to play online, for example (because I don't)?