I don't really know what types of situation this could happen but if for example you have a guy who did a crime and the prosecution can easily disprove every possible defense and the guy knows that, how does that turn out at trial?
Hypothetical: a guy is investigated for two different crimes. Murder and robbery. During the robbery he gets help from a getaway driver. the guy is arrested for the murder but the robbery is still being investigated. A year goes by and they are ready to file charges for the robbery, but the man still hasn't gone to trial for murder, what happens?
Would they wait for the murder trial to be over before having the robbery trial or would the getaway driver have his own seperate trial instead of waiting for the murder trial to complete?
And would it work different if it was in an entirely different venue for each crime?