Not without permission, and getting that permission should be your first move before any contact happens.
Standard conditions of parole and probation in virtually every jurisdiction include a provision restricting contact with other convicted felons or people under criminal justice supervision. The rationale is straightforward. People under supervision are expected to distance themselves from criminal associations as part of their reintegration, and the system treats contact with other supervised felons as a potential risk to that process regardless of the nature of the relationship.
The fact that you are family is meaningful and it is the strongest argument you have for getting permission. Probation and parole officers are human beings who understand that family relationships cannot simply be switched off, and close family ties during reintegration are actually a protective factor rather than a risk factor in most research on successful reentry. A close-knit family is a stabilizing force, not a threat.
The right move is for both of you to contact your respective supervision officers independently and explain the situation honestly. Be upfront about the relationship, the family connection, and what kind of contact you are requesting, whether that is attending family gatherings, regular communication, or more frequent contact. Ask specifically what permission is required and how to go about getting it documented.
Getting this formally approved protects both of you. Contact that happens without disclosure puts both of your supervision statuses at risk. A single conversation with your PO that results in documented permission costs nothing and removes all of the risk going forward.
Do not assume it is fine and proceed without asking. Get the approval first.