Interesting that Hull & Mikita never clicked on a regular line together. Probably because the both liked to have the puck a lot. Mikita seemed to like speedy guys like Wharram & Mohns that he could feed. For Hull, it didn't seem to matter who his centre was-Hay, Espo, Martin, etc, etc.. Although with Winnipeg he clicked with Nilsson who played a similiar style to Mikita.
Mogilny and Sundin did have some very good PPG seasons here in Toronto, but largely they did not play well together. They made the cross-crease pass a staple for Toronto's PP (still used today), but in terms of chemistry they really did lack. Both players wanted the puck too much.
Peter Bondra scored 45 goals in 2000-01, and that summer the Capitals traded for the league's most dynamic offensive player in Jaromir Jagr. On paper, it sure looked like it would work, at least in some capacity.
They never played well together, be it at even strength or on special teams. No chemistry at all. They played on separate lines, but it was as much because they did nothing alongside one another as to split up the scoring threat over two lines.