The original sentence implies a significant emotional and relational gap between the two individuals due to their age difference, describing it as a "chasm." This suggests a feeling of separation and perhaps an insurmountable divide caused by their differing life experiences and perspectives associated with their ages. The focus is on the negative impact of this age gap.
In the revised sentence, while the "chasm" still represents the distance created by the seven years, the introduction of the idea of a potential "bridge" also implies hope and the possibility of connection. It transforms the meaning from a purely negative view to one that acknowledges the possibility of overcoming this gap through understanding and shared experiences over time. This duality adds depth to the relationship dynamic, suggesting that while the age difference is a barrier, it also has the potential to be a point of growth and connection if they can navigate it successfully. Thus, the impact shifts from despair to a more nuanced view of the relationship's potential.