Is it possible to separate thse AC lines?

[k98shooter]

I am working on 2012 Yaris after crash, and need to replace AC low pressure line. It appears as the line consist of two parts = the shorter piece, which is attached to the compressor (that piece is damaged) and the longer, all aluminum piece that goes into expansion valve. Those two pieces are sold as two separate parts. They are connected with some sort of coupling, and I can't figure out how to separate them. I broke off plastic pieces form coupling already. I can take out both pieces, of coarse, but the longer piece is rather pricey. If anyome can help me how to separate those lines, would me much appreciated!