Correct.
Night & day.
Heb 2.14 - 15
Since, then, the children have partaken of flesh and blood, in like manner He Himself also shared the same things, that through death He might render entirely idle the one having the power of death, that is, the devil;and might set these free, as many as by fear of death were subject to slavery through all the lifetime to live.
Heb 2.15
και απαλλαξη τουτους οσοι φοβω θανατου δια παντος του ζην ενοχοι ησαν δουλειας
Kai apallaxē toutous hosoi phobō thanatou dia pantos tou zēn enochoi ēsan douleias
and might set these free, as many as by fear of death were subject to slavery through all the lifetime to live.
The key word here is ‘apallaxē’, which means ‘to set free’.
Satan is bound at the Cross so that we now have freedom and time to come to Jesus.
This time period is the 1,000 years, 42 months, 1260 days, times, time and ½ time.
To reinforce that the binding is to separate the devil from the people, is made manifest by reviewing the only other two Greek inflections of the word, as thus…
For as you go with your adversary to a judge, give pains in the way to be set free from him, that he not drag you to the judge, and the judge deliver you to the officer, and the officer throw you into prison.(Luke 12.58)
Luke is quite clear that we need to be set free from the adversary lest we be thrown into prison.
Sound familiar?
Here’s how the other inflection is used in the NT…
so as even handkerchiefs or aprons from his skin to be brought onto those sick, and the diseases to be released from them, and the evil spirits to go out from them. But certain from the strolling Jews, exorcists, undertook to name the name of the Lord Jesus over those having evil spirits, saying, We adjure you by Jesus whom Paul preaches.(Acts 19.12 -13)
Again…the text discusses being set free from evil.
So, yes...the difference between Satan being 'bound' and 'unbound' is epic!