Can we use both FSM and BPM at the same time for approval workflows?

Summary:

We have been asked to configure a workflow and we will need to use BPM for this one. We are currently using the regular FSM and we do not know if we are able to use the BPM at the same time

Content (please ensure you mask any confidential information):

We are using FSM for approval of requisitions for one BU. The other BU will need to have some dinamic approvers with certain fields that are extracted from "Person Management" so we will most likely have to use BPM for configuring the necessary workflows. As we are going to have FSM for one BU and BPM for another BU we were asking ourselves if it was possible to have both FSM & BPM workflows working at the same time.