I have a 2011 iMac running High Sierra with a builtin SuperDrive. I can access this drive as a Remote Disc from a 2018 Mac mini running Mojave. However, I can not use the Remote Disc to burn DVDs from the 2018 Mac mini using the software included with Mojave. I do not see how installing Roxio Toast Titanium would change this. However, I could be wrong.
You could try using Roxio Toast Titanium on the 2017 Macbook Pro, then using the 2009 Macbook to burn, but this might require owning a Roxio Toast Titanium license for each machine. The newest version of Roxio Toast Titanium that will run on a 2009 MacBook is version 18. If the 2017 Macbook Pro is running Big Sur, you may need to install the current version of Roxio Toast Titanium, which is version 19. I do not know if Disc Images saved using version 19 can be accessed and burned using version 18.
Another option would be to purchase an external Apple USB SuperDrive and the Apple USB-C to USB Adapter. This will allow you to do everything from the 2017 Macbook Pro. If purchased from Apple, the cost would be 98 USD, however, cheaper optical drives may be found which may not need an adaptor.