Indeed, not only “an accidental conversation” but an intentional one would fall outside the statute’s scope unless the U.S. citizen’s intent was to affect a foreign government’s policy in a concrete way. Thus, former basketball star Dennis Rodman most likely did not violate the statute when he traveled to North Korea and met with that country’s leader in an effort to promote “peace and love.”

https://www.lawfaremedia.org/article/logan-act-and-its-limits

Holy shit I totally forgot Dennis Rodman was best friends with Kim Jong Un. Id probably be cool with that being authorized, the last thing we need is that little dictator thinking he can grab a rebound.

My impression was that Rodman went there to fawn, not to negotiate.