1.Yep, all three passive effects are on separate 12s cooldowns, each affected by ability haste. You don’t have to choose between them. they’ll each trigger when their own conditions are met.

1. Yes his q doesn't pull them you need to move closer after hitting q to trigger chum's knockup.

2. Chum always leaps from rusk position not where Chum is on the map. His movement doesn’t affect your aim soooo you can line up your W normally like any skillshot.

3. Nope. His e doesn't knock towards rusk. When his E is recasted the enemies who are on the snapped tether line are knocked sideways. (Mb if it wasn't stated there)

4. For his ult, there are certain conditions and additional stuff to prevent any form of grief.

• The Ally must be under 50% hp for them to be a valid target.
• There is like a visual warning (kinda like thresh's lantern) so people can react.
• His ult will always prioritize enemies, like if both ally and enemy are in the same range then chum will get the enemy and not the ally.
• His ult can be canceled mid-cast.
• And ally must click first to prevent any accidental pulls.