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 specification only allows filenames to be up to 64 Unicode characters in length . Sentence 2:However , the documentation for mkisofs states filenames up to 103 characters in length do not appear to cause problems .

however