What
A background session is a Claude Code session that keeps running without a terminal attached. When the connection used to reach one is rejected, either because authentication did not match or because a reply was refused, the session now records that the rejection happened. Before, the rejection was only logged.
Why
Keeping a record suggests Claude Code can now act on a rejected connection later, rather than only logging it.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear what Claude Code does with the recorded rejection.