I've seen more than once where I've fed a hive and it looked to me that the bees started orientating, flying in ever widening loose figure 8's. This was mid to late afternoon ...
Does it "inspire" them to collect pollen or nectar instead of hanging on the hive?
Feeding does two other things, apart from supplying nutrition.
The first is that it causes great excitement, which may be of interest to any bees lurking around intent on robbing.
The second is that a message soon passes around the hive that there's 'nectar' coming in (from somewhere ...), and so yes - many forager scout bees will then take to the air in an attempt to locate the precise external source of that 'nectar', in order to pass that info on to the forager workforce.
So - to reduce the likelihood of robbing, and to save scout bees from making unnecessary and fruitless searches, it pays to feed last thing in the evening - if possible (and if convenient) - with just enough syrup to be consumed by morning, by which time the excitement and stimulus to search will have subsided.