Chris Wraight said this quote

These things were in the past now, many long years ago, though the memory remained as solid and present as his heartbeats. Time's passage had made the events seem almost crazed, hyper-real, stretched across a surreal dreamscape that felt more like a skjald's embellished saga than the intact past. Perhaps it had not happened like that. Perhaps the Lion had taken his Stormbirds to the Tyrant's fortress, and he himself had teleported in. Perhaps it had not been Ogvai there, but Gunn, or someone else. Had Bjorn been there too? It was a long time ago, so doubtful, but Bjorn seemed to always have been there, right from the start, just waiting for his time to come to maturity.