From what Max could tell, they were the only ones that had noticed the incoming ships, so it was impossible to tell if they were part of one of the delegation's fleets and just in a pattern that wasn't recorded in the Kepler military logs that they had copied into the database aboard Terminus.
If this was just someone's fleet showing up early for the attack, it wasn't going to be a big deal since they should be expecting a large number of attack vessels to come past this point soon, as it was near the edge of both Kepler and Cygnus space, where a lot of the smaller nations would need to cross to get to their target areas.