Hello,
All I needed to know was whether the connection to other pins was possible.

In the information sheets of many other items, there are cases where NC says ‘no connect’, but there are cases where it says ‘not connected’. So, just like the one in question, it is difficult to understand the meaning of ‘don’t connect’ without any explanation within the information sheet. For this reason, I think it would be great to have a clarification of NC within the information sheet. CA_NEWLINE_CA
From what I understand, in most cases
1. On the off chance that it has a function like a test point but isn’t used externally and isn’t connected,
2. If there’s an insulation issue with other circuits and performance isn’t ensured when connected,
3. Usually the case for pins without internal connections to match the pin setup of the package. CA_NEWLINE_CA
If there’s no internal connection like number 3, the manufacturer may recommend joining it to copper such as GND. Considering the other packages, I thought that case 1 would be rare, so I needed to ask to discover out if it was case 2.

Separated from the over, there wasn’t much room for wiring within the work of art, so I changed the package after thinking about it.
Thank You