To address the communication breakdown between the Italian and Swiss teams, a communication strategy that incorporates the following elements could have been implemented at the beginning of the project:

Frequent changes in software plans: The strategy should include a mechanism for regularly communicating changes in software plans to all team members. This could be done through email updates, project management software, or regular team meetings. The updates should include a clear rationale for the changes, as well as any potential impacts on other team members' work.

Rejection of new ideas: The strategy should encourage a culture of openness and collaboration, where team members feel comfortable sharing their ideas and opinions. This could be achieved through team$-$building exercises, regular feedback sessions, and a system for tracking and prioritizing ideas. The strategy should also include a process for evaluating and implementing new ideas, to ensure that team members feel their input is valued.

Strict adherence to fixed deadlines: The strategy should include a mechanism for communicating deadlines and progress updates to all team members. This could be done through project management software or regular status updates. The strategy should also include a process for managing changes to the project timeline, to ensure that team members are aware of any changes and can adjust their work accordingly.

Cultural differences: The strategy should take cultural differences into account and seek to build bridges between the Italian and Swiss teams. This could be achieved through cultural sensitivity training, team$-$building exercises that highlight the importance of diversity and inclusion, and regular communication and collaboration between team members from different cultures.

Final answer: Overall, a communication strategy that incorporates these elements could have helped to mitigate the issues raised by both teams and fostered a culture of openness, collaboration, and mutual understanding.