Champions League — quarter-finals and semi-finals draw

Anyone any idea how to get split screen in the Discovery app for the matches. TNT advertised it , but I've no idea how to do it.
 
Madrid looking hopelessly out of their depth against this City team early on. Have to hope for the Madrid Champions League plot armour to kick in I think.
 
Looks like we now UEFACity after UEFAlona died years ago. The referee has called nothing againt City, not even on what would be normal fouls.
 
There it is. First few minutes weren't so bad, but then Arsenal took control