When I was Telewest customer they did offer two. It was a one off payment of £5 and they provided a 10Mb switch to go between your modem and your two devices requiring a public address.
When NTL got their fingers in the pie they stole that provision without consulting the customers who had bought it.
To answer the question confirm no. I have Haproxy implemented on my firewall. Meaning that instead of port forwarding I reverse proxy by URL. So have multiple back end devices and can add authentication for Internet exposure of devices that do not have such. Plus SSL offloading with a wildcard Lets Encrypt certificate front ending a traditional HTTP back end device.
Use DDNS A address and cname all your Internet exposed urls.
Hub4/Gig1-> pfSense->Microtik CRS312/CSS326/CRS305->Meshed Asus RT-AX89X