It's possible, but I don't think anyone here will want to do it, attaching the two bsp's would require lots of error fixing.

It's possible but you'll need to import the bsp's into 3ds max, then attach them. That will give you a good amount of errors. Also, the bsp's are seperated for a reason. Halo needs to break up the level into multiple parts so it can run more smoothly. a30b is a pretty big bsp too, I don't think it would be a good idea.

But if you really want to go through with it, you can download the halo bsp extractor on this site.
http://hce.halomaps.org/index.cfm?fid=2029

You'll need to reassign a lot of the materials and fix a lot of geometry errors. I hope you know what you're getting yourself into.

Could you please be a little more specific on what you need?

I'm really not sure what you mean by "attach."

I would be easier just to use the two separate BSPs and ust the command "bsp_switch #"
Edited by Pepzee on Jul 31, 2011 at 03:19 PM

What do you mean by "attach"?

You mean make them make A30 A and A30 B all one BSP? If so refer to UnevenElefant5's post.

Or do you mean put both BSPs into a scenario and switch them?
Edited by Pepzee on Jul 31, 2011 at 04:07 PM

his post is what you want to follow then.
Edited by ally on Jul 31, 2011 at 04:37 PM

You will have tagspace problems if you merge them, theres a reason they are separate