This would take way longer than just getting a bus in, that’s why it doesn’t show up. There are bus only lanes in the Lincoln tunnel that make bus commuting much easier, especially from weehawken. If you get a bus on 30th street and bergenline or park you’ll only wait like 5-10 min and it’ll be a less than 15 minute trip into port authority. I used to take buses into PA every day for work this way. Unless there’s unusually bad traffic it’s really not that bad. I also really didn’t mind taking the jitney buses which make it easier. They’re cheaper and run way more frequently.