It depends on how many laws with felony consequences each broke.
If a robber hacks a computer (a felony), impersonates law enforcement (a felony), uses that to commit fraud (a felony), then transfers stolen money across state lines (a felony), then tries to launder it (a felony).....
If a robber hacks a computer (a felony), impersonates law enforcement (a felony), uses that to commit fraud (a felony), then transfers stolen money across state lines (a felony), then tries to launder it (a felony).....
You can see how such things can stack up.