improve the logic of the following text
After guiding Teledyne for 29 years, Singleton retired as an employee and officer in April 1989. That was a peak year for Teledyne sales ($3.53 billion) and earnings ($392 million).
After guiding Teledyne for 29 years, Singleton retired as an employee and officer in April 1989. Nevertheless, that was a peak year for Teledyne sales ($3.53 billion) and earnings ($392 million).