The description of the ghostwise halfling's Silent Speech trait (SCAG, p. 110) says:
You can speak telepathically to any creature within 30 feet of you. The creature understands you only if the two of you share a language. You can speak telepathically in this way to one creature at a time.
If I am understanding that correctly as written, it only allows the Halfling to speak to the target (not with) and does not allow for a telepathic reply. Is that correct?
If that is the case, it is definitely different than similar things like the Message or Telepathy spells...