Online School of Mastery

To check a Conservatory found in the backwoods, you need to break through the guard, and it can sometimes be stronger than what's inside. Most often, you have to go straight for the capture and take it. Let me clarify again: everything is located in 5-6 places, it's unrealistic to clear the guard and check it first.
Can I see this somewhere? On this template, I usually have 1 external dwelling of 6th level and a couple of Hives and Conservatories. And the norm is what occurs in more than half of the games.

well if everything is in 5-6 places and can be collected by one hero within a week, then these places aren't that far apart, meaning on average one Hive (Conservatory) is collected per day. With a chain, you can collect them in 2-3-4 days, which is already a tempo advantage. With a stronger and more inconvenient guard, you fight with the main hero, shooters with Tactics for instance, everything depends on the situation.
If some single Conservatory deep in the backwoods has been revealed, you can wait a couple of days, advance forward with the main hero, maybe there will be nagas or something else tasty along the way, and in those couple of days a noob might come by to check it with an army sufficient to break through the guard. In any case, it's not always worth diving deep for one Conservatory right away if the army is enough to clear other closer goodies.
By the way, it's extremely rare to have only 5-6 heroes on 121, except maybe on 200%.

As for ГО on Jebus, I only consider games of truly strong players for my calculations, not weak ones or the mediocre hero middle ground. And for them, cases of reaching the 1st are not uncommon, which is why I say it's ALMOST become the norm. The norm is probably 40-60%, almost the norm is 25-30%, maybe I'm a bit off about the frequency, but these cases definitely don't qualify as rare. 121 seems to me like it should be the standard for reaching, if you're striving. As for where to look — let someone more experienced suggest. I've only seen saves on 115 from Dirty regarding reaching, but there are enough reports (mostly on other resources) and quite a few saves as well. I myself broke through in official games only on 121, and even then I was just a couple of tiles short, and the newbies of the winter season also broke through on 1: Neverminder and, if I'm not mistaken, Hero of Might and Magic 3, I can't say anything about the others.