Not really.
The forum software only allows us to merge threads in specific set of circumstances.
I don't use the mod powers to manipulate threads to fulfill those circumstances, and in some cases, and can't, even if I wanted to. If the two threads are created in the SAME sub-forum, around the SAME time frame? Sure.
One of those is time sensitive.
You'll notice, that other thread in the Flame Zone was posted June 6th. This thread was made today. The forum software
might allow me to merge the two threads, if I first moved this thread to the FZ. . . but I'm not doing that, just to merge two threads. That isn't how things are done. It would violate the rights of the person who started this thread in this sub-forum.
. . . and TBH, I'm not sure the merge would take. The software is sort of finicky TBH. That is the most dangerous and hazardous operation, and if a mistake is made, it is one of the few things that can't be undone.
I don't like to make that attempt.