The script will skip to the last animation if you combine them like that. I’d suggest putting a pause in between so that the script will not skip through the first animation.
I just gonna take it as you want both Emma and Dylan to do the first animation at the same time.
@EMMA is listen_nod_happy_loop AND DYLAN is yawn_bored
@pause for a beat ← You can put however long you want.
@EMMA is idle_sit_neutral_loop AND DYLAN is idle_sit_neutral_loop
^Also, the spot coordinates for sitting and standing animations are totally different, you may need to re-spot them.
“does it while” should be used if the character is walking while doing an animation. So is or starts is recommended if they aren’t walking.