It does matter.
You have to have the BD player directly connected to the AVR with HDMI to get lossless audio like Dolby TrueHD. The TV won't pass that unless it has eARC which is not available on too many TVs yet.
I have a TCL Roku TV and I see no buttons on the TV to recognize the DVD player. The red cord is connected to both, the yellow cord is connected to video out on both, and the white cord is connected to audio out on both. The DVD player is on. How do I get a command to watch the DVD player?
You need to select the AV or composite video input on the TV. It should be on the TV home page. You may even see the output of the player on the screen button you need to select.
If you can connect the DVD player with HDMI or component video/audio it will give you a much better picture.