One of the most amusing examples of retitling for syndication was Emergency!
, the classic 70s paramedic/firefighting/medical drama... when the hour-long original was cut down into half-hour versions for syndication as Emergency Squad!
, the title screen would come up "Emergency!" just like the original, and then "Squad" would come in below it, matted in after in the same font. So what you'd acually see onscreen was "Emergency! Squad"