Comte's connection to other sociologists is that he essentially created the discipline of sociology.
Comte believed in the idea that society could be studied in a "positive" manner. That is, people could look at society and try to analyze it objectively and discover laws that governed its actions. Comte wanted to study societies in the same way that people like Newton studied the natural world. He wanted to be objective and scientific rather than more philosophical.
By putting forward these ideas, Comte created the whole discipline of sociology since sociology is a discipline that seeks to study society in a scientific way. Thus, Comte's connection to other sociologists is that he laid out, in a formal way, the project that they are all a part of.