When flipping a hidden Teemo as the turn player, do I get priority to respond to the flip before my opponent?

Ruling: When you play a unit from hidden, the unit goes onto the chain and auto-resolves with no reaction window. After the unit resolves, its "when you play me" trigger goes onto the chain, and then you get priority to react first.

Sequence:

• Play Teemo from hidden
• Teemo (as a unit/permanent) goes onto the chain and auto-resolves
• Teemo's "when you play me" trigger goes onto the chain
• You get priority to react first

Nuances:

• Focus only exists in showdowns, not outside of them
• You always have priority first to react to triggers you control
• Units without "when you play me" triggers (like Paaka Cub) create no reaction window at all when played from hidden