The parsing of language is going to be key moving forward. This is the key sentence for "collusion".
Barr wrote:Did not establish that members of the Trump campaign conspired or coordinated with the Russian government in its election interference activities
Now beyond the obvious narrow scope, the language is key.
The Atlantic wrote:When prosecutors say that an investigation “did not establish” something, that doesn’t mean that they concluded it didn’t happen, or even that they don’t believe it happened. It means that the investigation didn’t produce enough information to prove that it happened. Without seeing Mueller’s full report, we don’t know whether this is a firm conclusion about lack of coordination or a frank admission of insufficient evidence.
Or expressed differently