Audio not crossfading with the same video clip

I have the same Video clip, just 2 different parts sped up. And i want to make my audio transition smoothly in-between clips when cut. But it wont let me drag it to crossfade.

I have to either:

A. Get lucky and cut them or move them around to crossfade

B. let it just cut harshly

can someone help me fix this problem? i tried searching around the internet about "handles" but its mostly talking about 2 separate clips and not the same clip.

https://preview.redd.it/tkaf83z1ogfh1.png?width=650&format=png&auto=webp&s=3a8269edf05d87c93a887f3faacadc9cd4af208c