Posted.
For the above reason (Ixian Wars), the Morte Empire views telepathic messages like a declaration of hostilities against them.
At first I wanted them to risk reading the psychic message by using a random crewmember on watch but then I thought things through and that'd be too fast.
Maybe they'll be thinking about this later.

Similarly my first idea was to have the enemy fleets completely miss my ships and exit thousands of kilometers behind me.
My fleet is traveling at low-warp, slower than standard interstellar travel rate but it's still FTL.
By the Morte Empire's measurement they're traveling at Warp Factor 1.205 which equals about 13 times FTL
Attackers coming at a fraction of lightspeed would never catch up to me.