No one has to stalk anyone to know them. I believe he knew who he killed.
There is a motive but we do not know it because only BK knows it.
There is other evidence in this case but DNA convicts killers all the time and it is the most important evidence to a jury.
Many posters like to minimize the DNA but even the defense does not dispute the results of the DNA match taken directly from a swab of Kohberger's cheek.
The DNA was
5.37 octillion times more likely to be Kohberger's DNA than a random person from the general population.
Some perspective that is difficult to minimize.....
8 billion - World Population -
8,000,000,000
Billion 1,000,000,000 (9 zeros)
Trillion 1,000,000,000,000 (12 zeros)
Quadrillion 1,000,000,000,000,000 (15 zeros)
Quintillion 1,000,000,000,000,000,000 (18 zeros)
Sextillion 1,000,000,000,000,000,000,000 (21 zeros)
Septillion 1,000,000,000,000,000,000,000,000 (24 zeros)
Octillion 1,000,000,000,000,000,000,000,000,000 (27 zeros)
Learn how many zeros are in a million, billion, trillion, and other numbers, including the very largest ones, even googol.
www.thoughtco.com