Nope, that's doesn't make sense. Before Lucian faked his death, he was himself an expert in backstabing. He's stubbed in the back the elves, Ifan, divine order and even his own son, by setting him up as a scapegoat, so for "dragon knight" or even Damian wasn't possible to trap him in the Hall of Echoes.
Even experts can be defied by experts. It wouldn't be the first time Damian has thwarted Lucian (as he wasn't meant to be able to escape through the rifts for a start). Lucian's entrapment happened around 8 years after DOS2, towards or at the end of the great war.
I'm not sure how it couldn't make sense based on your argument.
