Design a logo featuring two interlocking letters, "a" and "b". 

1. **Letter Style**: Use a modern, minimalist sans-serif typeface.
2. **Color Scheme**: Change to a gradient of teal and navy blue.
3. **Connection**: Make the letters overlap more prominently, with the crossbar of the "a" extending to touch the "b".
4. **Background**: Use a subtle light gray instead of a plain white.
5. **Shape**: Introduce a circular element around the letters for added emphasis. 

This design keeps the essence of interconnection while providing a fresh look.