This is a well-travelled off-repeating question dissected in AGON and just about every other audio forum.
Here is one on AGON worthy of prior research that is readily available in your journey
https://forum.audiogon.com/discussions/bi-wire-or-not-to-bi-wire
In brief:
(1) It is always system dependent as best evidence ,
(2) Without prejudice of the above, an increasing number of major manufacturers are advocating a best-of-breed single run and jumpers array.
CHORD even stopped making dedicated bi-wires.
Here is one on AGON worthy of prior research that is readily available in your journey
https://forum.audiogon.com/discussions/bi-wire-or-not-to-bi-wire
In brief:
(1) It is always system dependent as best evidence ,
(2) Without prejudice of the above, an increasing number of major manufacturers are advocating a best-of-breed single run and jumpers array.
CHORD even stopped making dedicated bi-wires.