There was some pushing in Buffalo’s celebration line yesterday between Lehner and another Buffalo player after their win against Boston. I rewound the NESN feed that caught it because watching it live I couldn’t tell if it was playful / joking or not - after watching it 5 or so times it definitely didn’t look like they were joking with each other, it looked personal. Take that for what it’s worth.
Edit for clarification: Chad Johnson was in net for Buffalo yesterday but it was Lehner that was being pushed and was pushing the Buffalo skater back.