Now, first off, I managed to misread the part of the story from CoH that is about the answer (or part of it) so the answer I had in mind is not actually true.
This might make everything confusing, but I can and I will alter the answer, but then it needs stretching a little. If I do it, it actually means that
Legate is very very close to the answer with his latest guess.
Yes, Andróg saves Beleg and we could say that Gwindor saves Túrin. That is the part of the answer you got absolutely right. However, that itself doesn't form a connection between the two. And "they both saved a hero", as true as it is, is not original enough. (After all, there are loads of people saving heroes in Tolkien's works.)
