Hamlin and Harvick tangled on the track moments after practice began Saturday at Dover. Harvick initiated the bumping and banging, presumably as retaliation for Hamlin's outspokenness about Harvick teammate Clint Bowyer's illegal car.
NASCAR ordered both drivers off the track, and they had a heated exchange in their garage stalls.
Hamlin on Tuesday said he's spoken with Harvick and the drivers agreed their respective bids to dethrone four-time defending Jimmie Johnson are more important than feuding on the track.
Harvick has not publicly commented on the incident with Hamlin.