1. Mapping Out Mark Stone's Return
When Shea Theodore practiced in a no-contact jersey on February 10, he returned to the ice ten days later against Nashville. Tomas Hertl had the same situation, where he returned a week after skating in a no-contact jersey.
There's a noticeable pattern in player returns, where the injured player comes back to the ice shortly after donning the red jersey. That should be no different with Mark Stone, whose return from a lacerated spleen will boost the lineup.
Therefore, if one wanted to put together a reasonable timeline for Stone's return, it would be between one to two weeks. Generally, the no-contact jersey is for getting the player's feet wet, with Stone being no different.