TexasCHLforum.com

For what it's worth, I'll add my timeline here, since I called Thursday after reading lots of concern over the confirmation email that may or may not ever be sent.

Application electronically submitted (and giant barcode email reply received) on 12/22.
According to my phone call with RSD, they acknowledged receipt of my CHL-100 and other documents (I have history) on 12/26.

I never received a confirmation email for the CHL-100/other docs from RSD separately from the original application acknowledgement on txapps.texas.gov

Called them on 2/18 to make sure they received the 3 or so attachments I included with my CHL-100 submission, and the confirmed that they were all received (12/26). She said at the time they were processing license applications from 12/21, so my "all materials received" date of 12/26 wasn't far from getting started.