Um...I hate to be bursting anyones bubble here, but Maiden is Maiden. DT is DT. They are no more than an opening act. One member might jam with Maiden and I even doubt that. Hell, do you guys actually think that DT is going to get more than 45 minutes to an hour to play their shit?
Yes, I do think they'll get more than 45 minutes. As I recall, on the tours with King'sX/Satriani and Fates/Queensryche, when DT opened, they got 80-90 minutes. And those were 3-band tours, where there is less time per band than a 2-band tour. I believe when they went out on the summer tour with Yes, they also got 80-90. I can almost guarantee they'll get a 60-90 minute set.
And, yes, I can fully see them doing a joint encore. Not saying they
will, but it could
very easily happen. The bands do in fact have a history and a friendship, and DT are a very longstanding, well-established band that has the chops to play with Maiden, and who share a fanbase that would love to see such a thing happen onstage. Something else they share in common is a history of going the extra mile for the fans. So, yeah, I would think that there will be something special that occurs on this tour, whether it be joint encores or something else.
what tour did they play perfect strangers together on?
Off the top of my head, I am aware of two times: Once onstage in L.A. on the FII tour (see the Ytsejam official boot) and once on air on Bruce's radio show (see the bonus CD from Lifting Shadows). There may have been some other occasion where they did something together onstage (I seem to recall Mike mentioning somewhere that they did something with some of the Maiden guys in addition to Bruce, but I may be misremembering), but that's all that comes to mind at the present.