Dude seriously, every band has excessive time during sets, these are usually filled during jams, solos, jokes, or just blabbering with the crowd.
A band averages 15-20 songs per set
How much time are they assigned? usually 80-120 mins.
How will they fill that time with just songs? how can Matt Bellamy sing 22+ songs without break here and then, I dont think he could... its called re-energizing and I do agree they need more smooth tranisitions but you cant expect them to go, song, song, song, song, break, song, song, song, song break.... etc etc