Does the initial chain of combat pass Focus to the opponent, or does the attacker retain Focus after the initial chain resolves?

Ruling: The attacker becomes the active player after the initial chain resolves. Focus does not pass to the defender after the initial chain.

Nuances:

• The rules documentation may not explicitly use the word "Focus" when describing this transition, only stating that the attacker becomes the active player
• This was identified as a known documentation issue where the rules steps of combat don't clearly address Focus using that specific terminology