I personally don't watch different animes at the same time. I prefer to tackle each mostra one at a time. I think that works better in the long run. Besides, if you're watching two different animes at the same time, one is bound to become the preferito of the two, and then you'll really just be watching that Anime and you'll lose feeling for the other one. I think it's better just to devote your attention to one Anime at a time, because you'll get the most out of it. I hope this was helpful! Sorry it was kinda long!
Well for me I watch multiple Anime episodes at a time, so after I finish one episode of an Anime I watch an episode of another Anime while waiting for the precedente one to load.
Depends. If I'm loving a specific Anime to pieces, then I'll only watch it, and all in one go. If I'm mildly enjoying some anime, then I'll watch bits and pieces at a time from a couple of different series. (then unfortunately forget to finish some Anime xD)
I do one at a time cause I can barely remember the last episode of an Anime unless I watch the successivo episode right after. If I watch più than one at a time I wouldn't be able to remember the main characters' names.
For me it depends. If I really get into a specific Anime then I tend to watch one episode after an other but if I like the series and possibly come across a series I really want to watch then it becomes a time when I watch multiple episodes of different Anime and if I really get into one series out of the two I still have the other series to finish afterwards.
Multiple at once which I can admit is not very productive since I just keep watching più and più without finishing. Then when I /do/ go back to one I sometimes forget what even happened and have to watch it all over.