hardly the same thing i believe,

not including the fact that the toast has to be bought, you toast but its a single action, part of imersion is being able to stay in a certain action,

for example having a drink in your hand, adds to the immersion you try to create with such a fleshed out world, while the toast u pick a mug slam it and then it disapears into the void.

im not sure im explaining myself correctly, in summary, having a repeated action, such as being able to have some bread, or a mug in your hands, while you stay idle would do a lot for immersion and i dont believe its that daunting of a task