If a defending Teemo's 'When I defend' ability kills the attacking unit during the initial chain, does combat end immediately or does another chain open for Actions?

Ruling: Combat (showdown) only ends when both players pass focus in succession. Even if all units on one side are eliminated during the initial chain, players still get priority to play Actions before the showdown ends.

Sequence:

• Attack and defense triggers resolve in the initial chain
• After the initial chain resolves, players receive focus/priority
• Both players must pass focus in order for the showdown to end

Nuances:

• The absence of opposing units at the battlefield does not automatically end the showdown
• Combat ending is determined solely by both players passing focus, not by unit presence