For a reason, Thomas felt like these threads and stars weren't the same as the ones he kept seeing for hours. He felt their true identity was different from the densely packed and seemingly endless enemies here.
They weren't monsters, nor dark spirit masters. His thoughts got fixed over one thing, unbelievable thought that he decided to keep to himself until he'd get sure of his speculation.
He indeed guessed it right, but he knew how bad it was to spread rumours and give false hope in the middle of such a deadly situation.
He remained silent, only moving and chasing after William, fighting the monsters and dark spirit masters he could kill all the time.
The battle was indeed hectic and crowded with different enemies. So, finding a suitable target wasn't a problem. And with the necklace help, they got no worry at all whiles fighting these enemies.
