Broadlink sequence commands

Configuration
1

I need to have a sequence of commands ending with a hold_sec to increase the temperature. Which is correct? They both seem to work, but I cannot tell if the commands are really doing this: turn on heater -> increase temperature while pressing down for 6 seconds.

#1

  lr_ac_heat:
    sequence:
    - service: remote.send_command
      data:
        entity_id: remote.rm4_remote
        device: Living Room Aircon
        command:
        - heat
        - temperature heat increase
        hold_secs: 6

#2

  lr_ac_heat:
    sequence:
    - service: remote.send_command
      data:
        entity_id: remote.rm4_remote
        device: Living Room Aircon
        command:
        - heat
    - service: remote.send_command
      data:
        entity_id: remote.rm4_remote
        device: Living Room Aircon
        command:
        - temperature heat increase
        hold_secs: 6