@dalfen Balloons do nothing but hover or float. Balloons pick a wind current by adjusting launch location and time. Then they just ride it. Winds are 50-100 kph up there. At 40 km high that means a #balloon is overhead for 25-50 min (40km/100kph).
Satellite is 250km high, zips by at 30,000 kph. So it's overhead for less than 0.5 min (250km/30000kph * 60min)
Check out Wikipedia on #WeatherBalloons and Low_Earth_orbit (LEO) scale diagram. Or ask #amateur #OSINT person.