Gateway plays ringtone interrupted at begin

This is my automation:

# AVVISO CALDAIA ON
- alias: "Avviso caldaia ON"
  trigger:
    - platform: state
      entity_id: switch.plug_158d0001axxxxx
      from: 'off'
      to: 'on'
  action:
    - service: notify.telegram
      data:
       message: 'Caldaia ON'
    - service: script.turn_on
      entity_id: script.suoneria_caldaia_on
# AVVISO CALDAIA OFF
- alias: "Avviso caldaia OFF"
  trigger:
    - platform: state
      entity_id: switch.plug_158d0001axxxxx
      from: 'on'
      to: 'off'
  action:
    - service: notify.telegram
      data:
       message: 'Caldaia OFF'
    - service: script.turn_off
      entity_id: script.suoneria_caldaia_off

sequence:
  service: xiaomi_aqara.play_ringtone
  data:
    gw_mac: xxxxxxxxxxxx
    ringtone_id: 10096
    ringtone_vol: 10

suoneria_caldaia_off:
sequence:
  service: xiaomi_aqara.play_ringtone
  data:
    gw_mac: xxxxxxxxxxxx
    ringtone_id: 10097
    ringtone_vol: 10

When script turn on, gateway plays ringtone but at the beginning is soon interrupted.
Same ringtone used in other script sounds normally
Where is the problem?