Hour moves during minute slack

[egosumcarlo]

Good day. I've read from several threads that a slack in the minute hand is normal when adjusting time backwards. By slack, I'm referring to the tendency of the minute hand to move forward a bit after being adjusted backwards. I have the following questions based on some observation with my Submariner-Date:

1) I noticed that the extent of the slack varies. If I adjust time forward (maybe 30 mins - 1 hour) before adjusting time backwards, sometimes there is no slack at all. At other times the slack is equivalent to around half a minute and still sometimes the slack is one minute. Is this variance in the amount of slack (0 to 1 minute) normal? Or should the amount of slack be consistent every time?

2) I noticed that when the minute hand moves / springs forward due to the slack, the hour hand also moves a bit. Is this normal?

Thank you very much in advance for your replies. 😊