Given the task definition and input, reply with output. In this task, you are given two sentences in the English language (Sentence 1 and Sentence 2). Your task is to identify the connecting word between the two sentences.

Sentence 1:The combustion chambers also featured a smaller quench design for a higher compression ratio and enhanced flow characteristics . Sentence 2:Additionally , high - flow cast exhaust manifolds similar to those on the 289 Hi - Po K - code engine further improved output .
additionally