What is the validity time for the invitation link for the Guest to accept before it expires?

This is what i get from Microsoft, and this does not answer the question above:

Guests you already added via Microsoft Entra B2B, Microsoft 365 Groups, or SharePoint are ready to go. Team owners can add those guests to their teams. If you add a guest directly to the Microsoft 365 group associated with a team, the guest gets access to the team. However, the Microsoft 365 group doesn't generate an invitation email to the guest, so someone on the team should notify the guest.

After a guest is added to a team, it can take up to 12 hours for them to have access.

You can delegate the ability to add guests to specific people in your organization by assigning the Guest Inviter role. For more information, see [Limit who can invite guests](https://learn.microsoft.com/en-us/microsoft-365/solutions/limit-who-can-invite-guests).

The guest invitation process works as follows:

1. A team owner adds a guest to a team.

1. The guest receives a welcome email from the team owner, with information about the team and what to expect now that they're added.

1. The guest accepts the invitation. Guests who have a work or school account in Microsoft Entra ID can accept the invitation and authenticate directly. Other users are sent a one-time pass code to validate their identity ([One-time passcode authentication](https://learn.microsoft.com/en-us/azure/active-directory/external-identities/one-time-passcode) required).

1. After accepting the invitation, the guest can participate in teams and channels, receive and respond to channel messages, [access files in channels](https://support.office.com/article/c593c78a-27c4-4661-a598-682baa30ca7e), participate in chats, join meetings, collaborate on documents, and more.