Modify gateway extension for subscriptions

I am modifying an existing extension for Verotel to handle subscriptions by following this documentation

https://docs.woocommerce.com/document/subscriptions/develop/payment-gateway-integration/

However, I am stuck on one area. It seems the method most gateways use is storing a token locally. WooCommerce runs a scheduled task to charge that token.
Verotel and some others work in a different way where they have the scheduled tasks on their end. Verotel does a rebill request to the site that setup the subscription after the automatic recharge has been made.

Eg.

https://example.com/?wc-api=WC_Gateway_CardBilling&Action=Approval_Post&amount=20&currency=AUD&event=rebill&nextChargeOn=2017-05-03&paymentMethod=CC&referenceID=XXX&saleID=XXX&shopID=XXX&subscriptionPhase=normal&subscriptionType=recurring&type=subscription&signature=XX

This brings up two questions

Since WooCommerce will want to do its own automatic renewing on its end, is there something I need to turn off or do to prevent this?

Second is, what call do I need to make when the rebill request comes in to make WooCommerce renew the subscription, generate the invoice, email, etc? Is there a single call in the WooSubscriptions module which handles all of this?

I did find this function WC_Subscriptions_Manager::process_subscription_payments_on_order( $order ) but I don’t think it does what I am after