Has anyone tried overlapping words instead of speeding them up? Like so: How are you doing? I often wondered if this, or at least sped up speech

Has anyone tried overlapping words instead of speeding them up? Like so: How are you doing? I often wondered if this, or at least sped up speech, should be the default robotic interface... it would make sense to optimize for efficiency/speed (while maintaining legibility) if we can do so.