@A///
There's a 2 drive hub / dock that could do that. The problem though right now is 40gbps TB connection of which only a portion can be used which is why you get odd 3.x GB/s speeds instead of 5GB/s. Enclosures for multi drives then invoke a bridge controller and that bottlenecks the data to conform to the throughput of the cable / port being used.
It's kind of like PCIE bifurcation on Intel consumer boards vs AMD which allows it. Intel needs a PLX switch to aggregate the data on the X16 card and even though you can plop 4 drives onto it each doing 7.5GB/s the aggregate speed gets capped off at ~6GB/s vs 30gB/s the drives could to natively.
The NVME class drives woefully go beyond the speed of the ports they would get plugged into through an enclosure. The upside though is TB5 is to push 80gbps but, then there's the question how much of that is going to be reserved for display data.
The other good thing is that controllers are always being updated. It's still a hard thing to advance w/o the backing of Intel tough since they own the protocol and set the specs / programming. The flip side is USB4 which basically does the same thing but doesn't guarantee the speed as there's 20/40gbps versions It's not a clean subject ever with USB as we all know. I wish they would kill off older versions on new products even being an option. WTF am I going to use a USB2 port for on a system build in 2023? The only thing I own that uses anything close to that is my phone which can't use a certified higher version due to pumping 80W of power w/ a proprietary charging protocol. Which means for data it's quicker to use WIFI to move files than to plug in the cable.