Question: In a Multi-Power (MP) scenario, what triggers a remote UE to initiate the procedure for reporting indirect path failures when neither MCG nor indirect path transmission is suspended?
Option 1: Detection of a handover failure on the Uu interface
Option 2: Detection of a SL indirect path failure due to sidelink radio link failure on the PC5 unicast link or receipt of NotificationMessageSidelink from the L2 U2N Relay UE indicating Uu failure
Option 3: Occurrence of a random access failure on the N3I interface
Option 4: Expiration of the T421 timer without receiving a response
Explanation: In an MP scenario, the remote UE reports indirect path failures when it detects sidelink radio link failures or receives specific failure notifications from relay UEs, emphasizing robust sidelink communication for efficient resource allocation and failure management in multi-power setups.