Final answer:
Mr. Walter and Markus might experience changes in their relationship and social interactions after being introduced by Ms. Jameson.
Step-by-step explanation:
After Ms. Jameson introduced them, Mr. Walter and Markus might experience changes in their relationship and interactions. For example, they might start talking and interacting more often because they have been introduced and are now aware of each other's presence. They might also develop new friendships and social connections as a result of this introduction. The text does not provide specific evidence about the changes that might occur, but we can infer these possibilities based on typical social dynamics.