I do not know the details of this specific execution.
However, condemned men in the USA do beat on their arm and thigh veins for weeks before an execution to make an IV impossible or non-functional.
If it took more than 1 person to insert an IV, then it’s pry because he didn’t make it easy for them. Notice how there was no reporting about the prisoner’s demeanor.
The left got the feels for firing squad executions as somehow barbaric. Ditto old sparky. So executions devolved into this injection farce as somehow being more humane. Obviously not from this latest comedy special. It’s also courtesy of the left why this took 44 years to happen. Also obvious this isn’t a priority for reform from pols either.
A 45 caliber injection to the brain works every time it's tried.