That behind-the-scenes conversation [...] focused only on how to move and protect Mr. Trump if the judge were to order him briefly jailed for contempt in a courthouse holding cell, the people said.

Well, that's disappointing.

The far more substantial challenge — how to safely incarcerate a former president if the jury convicts him and the judge sentences him to prison rather than home confinement or probation — has yet to be addressed directly

It can't be probation, he'll just violate it constantly.