Smith would be ultra wary of giving Trump's people any reason at all to cry political bias or political interference. They do it enough without any evidence for them to point to. And Smith must think he has her covered:
Experts: Jack Smith’s latest move means Trump can’t use Judge Cannon to prevent pre-election trial
[...]
"This indictment will likely be brought in D.C. federal court, which means that the importance of Judge Aileen Cannon's rulings in the Mar-a-Lago case are diminished." MSNBC legal analyst Lisa Rubin agreed ..
And the implication is this: Even if Cannon caves to Trump’s demands not to set ANY trial date, she now can’t single-handedly prevent a federal trial before Election Day. The federal judges in DC have handled of 1/6 cases rapidly—and his should be no exception. FIN — Lisa Rubin (@lawofruby) July 18, 2023
.. that the implication of the likely indictment in D.C. is that even "if Cannon caves to Trump's demands not to set ANY trial date, she now can't single-handedly prevent a federal trial before Election Day. The federal judges in DC have handled [hundreds] of 1/6 cases rapidly—and his should be no exception."