Burgess and Crowe remain close, speaking on the phone "maybe four or five times a week".
"Just chatting. Seeing how his kids are getting on. One of his boys is playing a bit of rugby now so we keep in touch about that. He sent me a little message [this week] about going into World Cup camp."
The switch to Bath last year was a risk. The entire Burgess family — mother Julie, elder brother Luke and younger twin brothers Tom and George — all emigrated with him to Australia. And they were happy there. Julie, in particular, was distraught to learn he was giving it all up to play for Bath.
Burgess, though, was eager for the next challenge and is proving himself equal to it. This week, seven months after his Bath debut and with just 20-odd rugby games, Burgess joined England's 50-man pre-World Cup training squad.
Whether he will make Stuart Lancaster's final cut of 31 remains to be seen. Burgess would rather not answer questions on the subject. "I have an opportunity," is all he will say. What Burgess will say is that he has no regrets about leaving Sydney for Bath, or indeed league for union.
But he admits the transition has been tougher than he expected.
"There are not as many transferable skills as you might think. Certainly my respect for the game since coming and playing it has grown a lot. Which is not to say I was disrespectful before, but it's just the culture in league.
"I just didn't understand it, the specific roles people have. The front-rowers, the work they get through and what they have to do on a weekend is unbelievable.
"Then the lineouts, you might think they just stand there and throw it in. But the amount of detail and practice, everything that goes into winning a lineout. It's a fine art. My view of the game has changed in that respect.
"There are many more specialist players [in union] — hooker, tighthead, loosehead, openside, blindside — whereas in league, there are specialist positions but everyone across the board can do everyone else's positions, basically."
If it sounds as if Burgess is declaring a preference for union, he makes clear that is not his intention.
"I'm not going to compare them in terms of which I enjoy more," he says. "They are two different games. I enjoy both. But what I will say is that, with union, the longer you play it, the more you enjoy it."
The important thing, he insists, is that he continues to improve.
"Luckily, I like to ask questions. And, believe me, I have asked some pretty dumb questions. I remember the first time we kicked it out on the full off a kickoff. I was like 'what's next?' A penalty? A free kick? A scrum?"