What is the difference between a chip and pin transaction and touch for credit cards?

So I got to thinking today,

Rakuten's credit card app has been very convenient of late. It tells me immediately after I am charged that a charge event happened, by notification popup. This works for touch credit card charges, as well QR charges.

Chip and pin charges however do not popup on the app, even though they are a checked against the pin immediately.

So, does anyone know what the backend difference is between these two ways of charging a card here in Japan?

The only thing I can think of is they don't post the chip and pin charge until the merchant closes out their machine, but that doesn't really make sense to me as the chip and pin are immediately confirmed, and the terminal doesn't look like it's working in offline mode, so the transaction should be immediately recorded and notified….