Buffers and AD/DA conversion

[AM]

I've been trying to figure out for sometime now what's happening with the signal when my digital pedals are bypassed.
I own a Line6 Tonecore and a Boss DD6.

Let's start with the Tonecore pedal.
By reading the text in the following link one understands that the bypassed signal is not going through the A/D D/A conversion
http://line6.com/tonecore/faq.html#5

On another page though ( http://line6.com/community/docs/DOC-3965;jsessionid=9E290E9F942B82E428DCD9371F4A193A )
one can read the following:
Q: Are the ToneCore pedals "True Bypass" when I disengage the effect?
A: No, the Tonecore pedal will still have the audio signal running through the processor, but you will not hear the effect.

For the Boss DD6 I had no luck finding any information at all. One thing I know for sure is that when you disengage the pedal the delay trails are always on and disappear according to how many repeats you have dialed in. Does this means that the A/D D/A conversion is always active even in bypass mode?

Thanks for reading this. i hope somebody can shed some light.

[flo]

I guess that the input signal is buffered and then send to both the AD and processing circuit as well as to the output.
The signal that is AD-ed and processed is just not connected to the output.
So what you hear when it's in bypass, is the buffered input signal, NOT an AD-DA-ed signal.

[AM]

I guess that the input signal is buffered and then ....
So what you hear when it's in bypass, is the buffered input signal, NOT an AD-DA-ed signal.

That seems to be the case with Tonecore, but in the case of the DD6 which has a looping function (albeit 5.2 seconds only)?
Is it possible to have the trails always there and the short looping function and still maintain a not AD-DA-ed signal in bypass?