Connecting FIOS DVR to DVD Recorder

There are lots of messages here on the topic above, but I have a nagging questions:

1) I have my Verizon STB connected ot the TV through an HDMI cable. Why is it that I cannot *directly* connect the

tv to my DVD recorder and record programs that are playing on my tv screen (things recorded on DVR)? Why do I have to connect the inputs of my DVD recorder to the STB itself?

and

2) Can I still keep the HDMI input to my TV *AND* additionally connect outputs from the STB to my DVD Recorder? My DVD Recorder does not have HDMI connections.

Thanks so much,

Robyn