How many letters does the top answer for “the act of bringing two things into contact (especially for communication)” have?

The most common answer is connexion (9 letters).

Crossword clue: the act of bringing two things into contact (especially for communication)

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

connexion 9 letters wn-def

the act of bringing two things into contact (especially for communication)

joining 7 letters wn-def

the act of bringing two things into contact (especially for communication)