RDMA connections do not fail over to other RDMA-capable NICs within a NIC team. When an RDMA-capable NIC goes offline, RDMA connections fail regardless of any association with a NIC team. Services relying on RDMA connections might show failures and write errors to logs.
You can add NICs to a NIC team to allow traffic failover to other NICs in the team from a NIC that is offline, but the NIC teaming feature is specific to networking traffic and does not apply to RDMA traffic. This means that even though a device might be in a NIC team and might have RDMA traffic, the properties of the NIC team do not extend to the RDMA traffic on that device. As a result, even if multiple NICs in a NIC team are RDMA-capable, the NIC team relationship has no impact on RDMA traffic and connections still fail.