用逗号隔开的and或是and then后面一定要接句子么？直接接谓宾可以么？

Question

比如这句话The effect of that rippled outward through our career path, as far as I
am concerned, and then leads to a bright future.
and then用的是否正确？

Answer 1

and 可以连接不同的句子成分，也可以连接句子，而这些跟有没有逗号没关系。
此处的主要是then起作用，and可要可不要