Sony Bravia Airplay + Chromecast


I have a 2020 Sony Bravia with built in Airplay and Chromecast support.
I have try to setup it as speaker inside Roon - Settings - Audio… but i can only find it listed it as
(Other network devices - SONY BRAVIA via Chromecast streaming)
Im wondering why Roon cant detect the Airplay protocol of this TV.
I have enable it and is working great …all my Apple devices can stream content without any issue…only Roon cant detect it.

thank you for your support