If you have a subscription to BT for TNT Sports and you're using Sky Q, you should generally be able to access and record the HD channels, provided your subscription includes HD access. However, the ability to watch and record HD content can depend on a few factors, such as:
1. **Subscription Package**: Ensure that your BT subscription includes access to TNT Sports in HD. Not all packages may automatically include HD content.
2. **Sky Q


