In the middle of TNG: "Transfigurations" an alien ship is detected on long-range sensors. Worf says, that it travels with Warp 9.72 on interception course and it will take 10.53 hours to meet it.
We don't know the exact relativistic speed equivalent of Warp 9.72, but we may assume, that it is more than Warp 9, i.e. more than 1516.381 c. This speed (according to the same source) allowed to travel 4.152 light years in 24 hours. (4.152 / 24) * 10.53 = 1.82169 light years of estimated distance between Enterprise and that alien ship. And yet, Worf was ordered to try to hail them.
Is it really possible (in StarTrek franchise) to estabilish audio communication and "talk" to a ship, that is nearly two light years ahead and travels more than 1500 times faster than light speed?