When a chain is resolving, does priority pass between players after each spell resolves, or does the entire chain resolve without interaction once all players have passed priority?

Ruling: After each effect resolves from the chain, all players get priority and an opportunity to add to the chain. Players can respond between each spell resolution.

Sequence:

• Spell A resolves
• Players receive priority and can respond before Spell B resolves
• This continues for each effect in the chain

Nuances:

• If the chain empties completely, focus passes to the next player
• You need to wait until you get focus back to play another action spell and create a new chain