The Timeline is no longer chronological and no longer everything.
I noticed this distinctly today, when a Refresh and Rescroll no longer had tweets I’d just read reappear.
And I busted them.
No longer chronological:
The same set of tweets after a Refresh and Rescroll:
That is a very, very significant difference.
The Timeline can no longer be trusted.
Your tweets might disappear or never be sent to everybody.