It's not that complicated, right, it's availability and distraction. It's just not ideal, it's not impossible, as you can see, we're executing, but it's not ideal, right. So, we've seen, the employees either working from home for a load, in some cases, what have you, but they come back, just like we have the TELA LIVE program for presenting to and engaging deeply with surgeons which is working. We also, have our B2B program, which predates COVID, which is, becoming super, super important. And that allows us to use a team of logistics, and customer service folks, to engage with the supply chain people, if the reps can't get into the hospital. So, we're seeing some situations where non-essential personnel, just to do administrative stuff. Reps particularly aren't encouraged to be in the hospital, if they've got to be there for a clinical reason that's a different story. So, we're employing our B2B program, which is mostly virtual by email by zoom calls by all the usual tools. So it's working, but it's a bit more, frictional force, I would say, it's not it's not ideal. I think in Matt in principle, if you are a large incumbent its easier right to deal with sort of a fractured employee base across supply chain. If you are a newcomer, it just takes a little bit more time, a little bit more friction, and you just got to be relentless, and persistent, and flexible, which we are, it's working, but it's a little tougher. And that does have some impact on our product range, right. I mean, we can, that we're more established on the hernia side. So, our live programs are able to drive deeper penetration and more usage, where we have access and where we are. Whereas on the PRS side, we're still establishing ourselves, we're newer on that product range. So that probably has a little bit of a bigger impact on PRS, although we're doing well with PRS, than it does on hernia. But I think this concept of incumbent versus newcomer probably, we have a little more friction to go through that.