Yes, David, there was some confusion after the June 14 announcement, but I think many of the regulatory authorities and many of the clinician groups came out pretty quickly to say, let's talk to you doctor and work out a risk pathway between now and when you get that replacement device from that competitor. And also, for new patients, the doctors and certainly all of us in the industry we're very focused on the safe and effective therapies from ResMed and other players in the market. And so I think that that messaging was actually pretty quickly put out there by those physician societies and relevant health authorities after somewhat confusing announcements, right on that June 14 from our competitor. And so long-term, there's been some impacts that are quite beneficial in patients making that trade off. And certainly for us, you saw plus 5% growth in masks in the quarter for the U.S., you saw plus 24% growth in Europe, over a COVID [indiscernible] there, but very, very solid growth in our mask business. As you said, there's a bunch of factors, David, that this time last year, we had all the ventilation Mark sales, because it in the U.S which was, you know, a confident we were was like a headwind. And the other headwind, we had was the annualization of the snap acquisition, which we did just before COVID, we closed it just in that sort of February through June period. And then, there's some balancing of inventory and cash flow due to the competitive recall all going on at once. And so a lot of competing dynamics, but as you saw, it's a resilient business. When people getting great sleep apnea therapy, they love feeling better, sleeping well and waking up refreshed, and they want to get a new mask every three or six months. And they're doing it at increasing rates due to COVID, that step change has remained. And we're confident, we look through the fiscal year that we're going to see, mid single-digit up to high single-digit growth. In our mask business and it's all about us engaging with those, those patients getting new patients on board. As we talked about some incremental revenue opportunities, they're on the devices, maybe some of the masks, and then we get back to where we were before, right. And we go back to engaging patients, ensuring they stay on therapy, and they have really quick and easy access to resupply, if they want it and when they want it, and when it's covered by insurance and co pays and everything.