How can omission of wāw be understood when a clause begins with ka-annamā?

Wāw with Nominal Circumstantial Clauses: Omission, Inclusion and Disputed Cases

• Ka-annamā necessarily turns a nominal clause verbal
• Ka-annamā means restriction in every occurrence
• Ka-annamā is identical in meaning to coordinating wāw
• Comparison creates semantic continuity with the earlier scene