Hi,
Fundamentally, what matters is the closeness of the connection, rather than the length of the parts.
But it's also the kind of closeness. There has to be some impact, eg some drama, some thoughtful contrast, some literary effect, some style. Otherwise, almost everything you write could be punctuated by semi-colons.
Your example is too trite for a semi-colon, in my opinion.![Smile [:)]](/emoticons/emotion-1.gif)
Best wishes, Clive