Well, imagine a distance whereby light needs 1 hour to travel the distance but it takes only a half hour.
distance / time
Well, there’s been evidence before of things moving faster than light.
Look up action at a distance. It’s something that Newton assumed was true, and Einstein needed it to be false for special relativity.
If Gravity works as an action at a distance, then this is just huge, absolutely huge. It means no gravitons, etc.