eligbility for 144 hours TWOV

Hi, I have a flight with air china FUKUOKA- BEIJING and after 50 hours A flight BEIJING - MILAN to return home, I have italian passport.
The flight BEIJING-MILAN is without stopovers but the flight FUKUOKA-BEIJING have a refueling stopover ( about 1 hour) in dalian, but I don't change the airplane or the flight, the number of flight is the same.
My doubt is that for this little stopovers I haven't the conditions to 144 hours TWOV.
What do you thinks?