Dear Travis,
Of course, communication with a water wave, or with a classical electromagnetic wave is not counterfactual. What I felt is that some Bohmians do not take quantum wave, and especially empty wave, in a strong ontological sense. Sometimes, wave is considered as a part of a physical law which governs the particle motion. My guiding principle of the presence of a particle in a particular place is the (weak) trace it leaves there. Empty Bohmian waves sometimes leave trace, and this is the case in the setup I proposed, so from my point of view is is not counterfactual.
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