Need Approval workflow to skip an Approver specific to single Job Offer

The client had a specific requirement, where a candidate's Offer was supposed to be approved at 2 Levels (Defined the approval rule to have 2 approvers - A1 and A2). We have a third authorized contributor here A3. A3 is not a part of the defined Approval Workflow.

The candidate who is considered for the position, is likely to take the role of A1's Manager and thus the rule is supposed to be defined in such a way that,

If recruiter submits the offer, the notification should skip A1 and go to A3, such that, A1 cannot access the offer and is not notified of the Offer letter being processed (Tried to avoid Reassign / Delegation because these make sure to send the FYI notification to A1 even if he cannot approve the offer).