they speak to each other vs they speak together

Examples:

• They speak to each other in Spanish.
• The siblings speak to each other every day.
• It's important for team members to speak to each other openly.
• The neighbors speak to each other over the fence.
• The students speak to each other during the break.

Alternatives:

• They talk to each other
• They communicate with each other
• They have a conversation with each other
• They chat with each other
• They converse with each other

Examples:

• The choir members speak together in perfect harmony.
• The children speak together during the performance.
• The actors speak together to create a powerful scene.
• The team members speak together to present their ideas.
• The siblings speak together to convince their parents.

Alternatives:

• They speak at the same time
• They speak in unison
• They speak simultaneously
• They speak together in harmony
• They speak collectively