So Hillary hires a guy with known Russian connections to dig up a bunch of dirt on Trump that she can use in the campaign.  But that is not collusion.  The Trump team meets with a woman who claims to have dirt on Hillary that would be useful to the Trump team.  The Trump team does not follow up but that is definitely collusion.  Near as I can see neither situation is collusion.  Both are rather scummy.  And in Hillary's case she took the initiative whereas in Trump's he was offered bait and passed.