Double-Crossers 2 solution
by Kegler

As indicated in the title (and in the Notepad hint), each shared square contains two letters.

Double-Crossers 2 solution grid

Across
1H + OR + SEMAN (NAMES rev)
4D(IS + TRip)UST
7DENIM (hidden)
8COMPLIMENTS ("COMPLEMENTS" hom)
9ANTE + DATE
11P(R)AWNS
13EMBRYO (BY ROME anag)
14C(HAM + PIe)ON
18ATTACHE CASE (CATCHES A TEA anag)
20CO + UGH
21LE(A + RN)ERS
22L(Y + RICh)IST
Down
1HOY(D)EN (HONEY anag)
2SEDIMENTARY (MAID SENT RYE anag)
3A + NA(CON)DA
4DIMPLE (hidden)
5TR(Y)ME (TERM anag)
6STET + SONS
10T + EACH
12R(ADIOS + COP)ICo
13EMBATTLE (TIMETABLE - I anag)
15AM(USED + L)Y
16DECORS (SCORED anag)
17AGHAS + T
19A + CORN