During the above swift flood of words, Brick has reclined with contrapuntal leisure on the snowy surface of the bed and has rolled over carefully on his side or belly.
This is a stage direction from Tennesee Williams's Cat on a hot tin roof.
I looked it up in the dictionary, it says "contrapuntal" is a music term and means having two or more tunes played together to form a whole. I am still confused with the meaning of the word in the quoted sentence. Thank you so much for replying below!