It takes weeks and weeks of planning and work to bring a tower down. I know, we were told that after 9/11.
Huge difference in size and complexity of the structures between the WTC Towers (2 of them) and 110 stories and Champlain Towers South’s 12 stories that was already in a weakened and unstable condition with one section partially collapsed.
Kudos to the expertise of Controlled Demolition Inc who were able to accomplish this in a relatively short time at great personal risk to make the site safer for the recovery efforts.