Can you concentrate on a spell while casting another spell as a ritual?

@JeremyECrawford can you continue to concentrate on a spell while casting another spell as a ritual?

— crimsonknight (@crimsonknight52) January 27, 2016

You can't concentrate on a spell while casting the ritual version of another (see "Longer Casting Times," PH, 202). https://t.co/At1kde3xYA

— Jeremy Crawford (@JeremyECrawford) January 29, 2016