there is subtle difference in situation you both describing, but that subtle difference can be HUGE thing.
MX series can be connected to multiple devices, most bluetooth accessories cant, still in BT5 world, but thats how it is.
so. even if software is absolutely same, you get better experience with MX keyboards.. because you dont have to pair it everytime you take your keyboard to work etc. which most keyboards fail to do. which is ridiculous.
also with mx keyboard you can use it on your ipad, pc,.... and there is button or key shortcut(depends on model) which helps you to switch to that other device.
so you can have ipad + desktop in front of you and when you are writing on pc and your ipad email notification goes on, you just press keyboard shorcut and you can start typing on your ipad.
sorry for this convoluted explanation, but in real use it removes so many annoyances that it is worth mentioning.
mx series of products is best product line from all manufacturers of this kind of accessory combined and i can tell you i had a looooot of wireless keyboards in my life. i use ipad more that 10 years and had almost always keyboard connected. first ipad was trash as..
Yes, that is multi-device bluetooth. Neat and definitely better implemented than in some cheaper devices. However, the question was specifically about the flow software.
How does it compare to Synergy or Mouse without borders?
https://symless.com/synergy
https://www.microsoft.com/en-us/garage/wall-of-fame/mouse-wi...