Recently having the opportunity to play another Jerome Gambit in one of my Chess.com Giuoco Piano tournaments, I fired off my 4.Bxf7+ as soon as I could.
When the 3 days for my opponent's move had elapsed, and I had neither received his move in reply nor heard that he had overstepped the time limit, I checked in on the game at the website.
There was still 79 minutes left on his clock. There was also this notice
Your opponent is currently on vacation! They have 3 months of vacation time left, but may be back sooner.