Chess Openings: Traps and Zaps - Chess Forums

I just got this book by Bruce Pandolfini called Chess Openings: Traps and Zaps and was hoping someone could clarify #16 page 18. After move 6 how come there is no Queen exchange in move 7 or move 8?

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222 Opening Traps After 1.d4 (Opening Traps by Knaak, Rainer

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Traps lurk in every stage of a chess game, but they occur especially often in the opening. In this instructional volume, the two internationally

222 Opening Traps After 1.d4 (Opening Traps Series)