Christopher's over-analyzing things and taking Louisa's name is not going well with Tim. The way Chris's words influencing his boss Mr. Oliver Miller is not being digested well by Tim. The person who never paid any heed to anyone is now hearing Chris and his words without reverting them back.
Tim started feeling unknown anger boiling up inside him against a person whom he met just a few hours ago which is very unlike him
Even though everything is taking place before his eyes Oliver Miller maintained a calm demeanor not wanting to give anything and even he is confused about approaching the tornado lying ahead of them