It is not platforms but tracks where trains arrive and depart.
Please let me know if it is possible to make it in 4 minutes. You may not have full 4 minutes.
It can be a very tight connection, I should say.
The former train may arrive at 9:44:45, in which case its doors may get fully opened at 9:44:55.
You have to go down from the platform either to the pathway (on the mezzanine) or to the concourse (on the 1st floor) then go up to the other platform.
In a case where the scheduled departure time of the latter train is 9:48:00, its doors may begin to close at 9:47:45.
- Map in Japanese of Kanazawa Station: PDF file
https://www.jr-odekake.net/eki/img/premises/0541449.pdfNow you plan to get off Limited Express Noto Kagaribi 4 (arriving at 9:44 at Track 3) and catch Limited Express Shirasagi 6 (departing at 9:48 at Track 1), which is scheduled to arrive to Nagoya at 12:48 at Track 4.
From Kanazawa you alternatively can
take Limited Express Thunderbird 16
(bound for Osaka, departing at 9:53 at Track 2) until Kyoto
(arriving at 12:09 at Track 7)
then change to Shinkansen Hikari 520
(bound for Tokyo, departing at 12:32 at Track 12),
which is scheduled to arrive to Nagoya at 13:25 at Track 14.
In the transfer at Kyoto to Shinkansen, you pass through Shinkansen Central | East Transfer gate.
- Map in English of (JR) Kyoto Station: JPEG file
http://english.jr-central.co.jp/info/station/_img/kyoto_L.jpg- Map in English of (JR) Nagoya Station: JPEG file
http://english.jr-central.co.jp/info/station/_img/nagoya_L.jpg