You are looking to get break-before-make conduction in
the switches. This is done either by simple phasing, or
sometimes with a sense feedback from the final gate to
somewhere back in the drive taper chain. I would not call
the cross-conduction interval "crowbar current", to the
power management / power conversion folks this has a
different meaning (a shunt which when triggered, stays
on past the point where some upstream current limit
trips, saving downstream electronics from overvoltage).