Rail Pass travel - leaving pass area boundary

Hey folks. I'm visiting Kansai in some time. I am considering several JR West area passes. I would like to know if it's possible to travel on a single train whilst combining a ticket for one end of the journey and a JR West pass to cover the other end of the journey - without having to, for example, disembark at the boundary station of the area pass? Or without switching trains? Is the ticket control system flexible enough for that?

Example 1: Visit Kanazawa from Osaka, have a Hiroshima Area pass (on which the most easternly station is Tsuruga) as well as a regular ticket from Tsuruga to Kanazawa?

Or, as it would be a better deal money-wise:

Example 2: combining rail passes: having both the Hokuriku Area pass and Hiroshima Area pass to travel from Osaka to Kanazawa?

You can just pay the extra the pass does not cover when you purchase a ticket.

As long as you have a valid ticket (in a broad sense, including passes, etc.) at every point of your trip, you are fine.

I think you are from Europe (Finland, bingo!) where the ticket system is totally different from that of Japan. In Japan there is a ticket gate where you are inspected whether you have a ticket valid for that station. On the contrary, in Europe the inspection is done on the train, and if you don�ft have the valid ticket you must pay the fine. In Japan once you go through the gate you can get on the train and if you don�ft have the valid ticket for that train, you can pay for the fare for the section you are not allowed to take, with no fine. This can be done on the train to the conductor or at the destination (ask the station staff how to pay). In general you might better pay on the train since the fare you must pay is clearer than at the station where it is difficult for you to show where are you from. This is called Norikoshi which is quite normal in Japan.

Thank you for your help everyone. I queried JR West and they confirmed your information when it comes to combining different area passes (my 2nd example works just OK according to them).