Tile wide control nets vs image wide control nets

[ntrouve-onera]

Reading the roadmap I'm not sure what is the difference between Tile wide controlnets and Image wide controlnets.

From the source code it appears the control image is sliced using the slice_cnet function meaning that each tile get a cropped control image (which is what I expected). Not sure what other kind of behaviour would be made possible by another type of CN processing?