How do I solve 23 across in Times Cryptic 29536?

Question

Accepted Answer

23 across reads "Communication with cooler character?" (3,6 letters); the answer is FANLETTER. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Communication with cooler character? (3,6)

23A — Communication with cooler character? (3,6) — FANLETTER