Did you see how long he played with both?
The sample was very small not to mention it wasn't consistent.
He didn't benefit from consistent linemates all year and typically centered whoever was coldest.
Cool story...how long did that last?
You have a poor recollection of the events leading up to that and how it came about.
I don't.
Oh believe me, I remember him crying about how he'd rather be sent to the AHL than be used on a 4th line. But in the end, the guy reapeatedly got opportunities with Gomez and Gionta, and he just wasn't up to the task. That's why he could not deliver and that's why he was always sent back in a depth role.
He was given opportunities. He was not a 4th line player/healthy scratch from the get-go like you're trying to push as a fact.
If your narrative was any true, the simple fact to have 1st line minutes and being put on a line with Gionta and Gomez should have been enough to make him produce in the first place. But it didn't. And the guy ultimately had success when he came back.
Something happened in between and it's not that he got a "better opportunity". He simply made progress and was ready for a bigger role. And this time, the coaching staff could not bring him back down the lineup, because he proved he was ready to take on the role. Not because they felt like keeping him there.