2 sandwich tins in oven at once - see by side or underneath each other?

[WestYorkshireGirl]

Making a Mary berry choc cake in 2 X 20cm tins - they might just go side by side but one would be further forward. Would you do them at same time but one underneath on the next shelf down ?
Thanks

Side by side, even if staggered.

One higher then the other will cook different times

Thank you!

Late to thread, but agree put them on the same shelf side by side.