Concatenating a mc?

hi…i have two swfs that are 122 frames a piece…i load swf 1 into an empty movie clip…is there a way for me to load swf 2 into frame 123 of that empty movie clip? or load swf 2 into the next frame as soon as swf 1 is done?? thank you.

ps
my goal is to avoide loading swf 2 into a different empty movie clip as i have controls that navigate within the empty movie clip im working with.