Candidates accept PAC money all the time. It has nothing to do with coordinating. These are donations to a campaign. Here's a list: https://www.opensecrets.org/political-action-committees-pacs...

See how Kevin McCarthy, House Minority Leader, raked in almost $8mm in the last election cycle? That's because he'd have been Speaker if Republicans had held the House. Those $8mm in donations would've bought companies like Goldman Sachs, MetLife, Altria, and others plenty of phone calls with McCarthy. https://www.opensecrets.org/members-of-congress/contributors...