{{Concentration to maintain a spell counts as a standard action every round. You may take a move action every round and still maintain concentration, barring distraction. I -believe- that a person viewing someone using the Concentration standard-action can discern that they are indeed concentrating. So yeah, there's nothing to have explicitly interrupted it yet.}}<br/><br/>"I don't know," Chrrou admits to Geno in a whisper. "I only just saw him." He pauses, then adds with a sigh, again making sure the party can hear, "He was... moving very quietly, and trying to keep out of view." Chrrou sounds wearied and distressed, despite having just had what is for him a whole night's sleep; the small and vulnerable-looking figure stays unusually close to Geno.