Cartoon of the jet-wind interaction for Cyg X–3. Left:in the hypersoft state the jet is turned off and the stellar wind is allowed to expand freely close to the compact object. When the jet turns back on during the state transition, it encounters a dense medium at rest relative to the jet which leads to efficient shock production and subsequently to strong radio and γ-ray emission. Right: when Cyg X–3 is transiting from the hard state to the hypersoft state, the hard state compact jet has blown out a cocoon in the stellar wind, into which the episodic jet can then expand more freely producing weaker radio emission than when expanding directly into a stellar wind. We note that the stellar sizes and the binary separation are not to scale with respect to the jet.