If Dmitri and Lev were outside the space pod, floating weightlessly around space while enjoying the sights, they'd have immediately noticed the change in the atmosphere brought about by the sudden appearance of smaller spacecraft. But since they were holed up inside their space pod without noticing anything amiss from the small hole they use as a window, they were left oblivious to the swarm of spacecraft that had already come out from the fleet of Qwriohl Mother Ships.
While they were discussing their next move, wondering if they risked getting too near to the fleet of Qwriohl Mother Ships or not, it was already too late. Apparently, the Qwriohl Mother Ships have an even greater detection range— one that Dmitri wasn't expecting at all since he was confident in himself as having the most advanced space technology out there. Long story short, he clearly underestimated the space technology of the enemy and now they're getting punished for it.