After an attack effect's initial chain resolves, can players start a new chain with action cards?

Ruling: Yes, after the initial chain from an attack effect resolves, both players have the opportunity to play actions and reactions to start a new chain.

Sequence:

• Attack effect triggers and initial chain starts
• Initial chain resolves completely
• Both players can now play actions and reactions (attacker has priority)

Nuances:

• Action cards can only start a chain, not respond to another card on the same chain