Yeah, but this would be something the network would organize, I would imagine. DT not including it on the DVD wasn't necessarily because they didn't want to, more like between their hectic schedule and the label decision, they may have just deemed it unnecessary.
Considering that this is being aired on TV and they're not currently touring, an interview would take up a completely different purpose, in this case, for the network, to encourage those who own the DVD to watch it, and for the band to serve as a bit of an informative bit for the newcomers.