Here's why:
* Homophones are words that sound the same but have different spellings and meanings. The length of a word depends on the spelling, not the sound.
* Pronunciation varies. What sounds the same to one person might sound different to another. For example, "write" and "right" might be homophones for some people, but not for others.
So, there is no definitive answer to the question of the longest homophone. However, you could argue that words with longer spellings that are frequently pronounced the same, like "desert" (noun) and "desert" (verb), could be considered "long" homophones.