I left CommuteAir almost 2 years ago, but when I was there pretty much nobody who was in any incarnation of the Aviate Program, or the CPP as it was called before that, got a class date at United as soon as they met the requirements. Usually it would be months or even years after they met the minimum requirements of the program.
Also, unless it has changed back, you should be aware that the Aviate program is not a true flow, but rather a preferential interview program; so there is no guarantee that you would be accepted into the program. There have been many different incarnations of the CPP/ Aviate program over the years, so even if it is a true flow again, that could easily change before you flow.
When they introduced it in 2016, it a guaranteed. Later it was a guaranteed interview, which had a pretty low success rate for a while. If you failed either the Hogan or the interview you had another chance after a year. In early 2022, it became a true flow, except you were not eligible for the flow if you had previously failed both or your interview attempts for the CPP or Aviate program. I was eligible because I didn't get past the Hogan either of my attempts at the old CPP in 2016-'17, and they didn't consider that a failed interview.
However, since I left CommuteAir, they ended the flow and changed it back to a preferential interview, and I believe they increased the flight time requirements. If I'm not mistaken they even changed the rules so that no flight time from before they introduced the latest version of the Aviate Program would count toward the requirements. I have not heard anything about it changing back to a true flow, and even if it has, with how many times they changed the rules in the past, I wouldn't count on it lasting.
Also, even when it was a true flow, a number of people were removed from the flow by the final review board, so even when it was a flow it was not much of a guarantee. I was one of those dho didn't make it past the final review of my records. No explanation of what rule I broke was given, but i suspect it was too many sick calls, as the program had some fairly stringent rules about how many times per year you could call in sick, and against calling in sick at all in certain situations.
If you're looking for a true flow, you'd be better off going to one of the American wholly owned regionals, if they are hiring- though I have heard their flow may have some of the same issues with people being excluded from it for not flying while sick. I have never worked at any if the AA wholly owneds so I can't say for sure. And as others have pointed out, the current reality is that hiring is pretty slow at the majors right now, albeit expected to pick up this year, so you probably aren't going to escape the regionals as easily as so many did in the early 2020s.