Can mobile phones and watches talk to each other after opening Huawei's eSIM- 1 dual terminal service?

After the opening of Huawei's eSIM-1 dual terminal service, the main number will be presented to users in a unified way, and mobile phones and watches cannot call each other.

Tips: (Internal knowledge, no publicity) The secondary card has an independent number, but it is only used for internal network transmission. You are not allowed to make phone calls, send and receive short messages, and users can't see them.