Some stuff floats, some sinks. The flavors will be transferred regardless, as a ferment is rather active and the cider will mix. You can always put some cheese cloth over the end of the siphon.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk