Rossi threw Cassarino out of his life once the Doral test started. Rossi banished him from coming to visit and commanded him to not contact him ever again.
Cassarino's deposition describes at least one tour through the Doral site in the Spring of 2015. He may have been banished after that though.
In the same deposition (taken in Feb 2017) Cassarino says the last time he spoke with Rossi was after the visit but before the lawsuit was launched. In that time, though, Cassarino continued to send emails to Rossi about personal items (i.e., Cassarino's son, Christmas greetings) and Rossi responded appropriately.