This is the 6205th most frequent Polish word.
bannon
The word "bannon" does not exist in Polish. It may be a proper noun or misspelling.
In this sentence, 'Bannon' is a proper noun, likely a person's name, and designated the subject of the action 'visited'.
Bannon odwiedził nas wczoraj.
Bannon visited us yesterday.
Here 'Bannon' is a proper noun used in a possessive form to denote something belonging to the entity or person called Bannon.
Rozmawialiśmy o działaniach Bannon.
We talked about Bannon's actions.
In this example, 'Bannon' is a proper noun used to identify the topic or person whom the text is about.