If you watch tnt sports on, discovery plus premium is it in HD and free as a bt customer

As of my last knowledge update in October 2023, BT customers with a subscription to BT Sport can access TNT Sports through the BT Sport app, and it typically includes HD streaming. However, access to TNT Sports via discovery+ depends on your specific subscription and any promotions or offerings that may be in effect. It's advisable to check the latest details directly from BT or discovery+ for the most accurate and up-to-date information regarding HD availability and any potential costs or eligibility for BT customers.