Tableau Next applies a deterministic precedence model for conditional formatting. When multiple conditions overlap, Tableau Next attempts to combine their formatting. When the formatting definitions actually conflict—for example, two matching rules specify incompatible formatting for the same property—the most recently created rule takes precedence. Therefore, B precisely matches documented Tableau Next behavior.
The conditions are not discarded simply because they overlap, so A is incorrect. Likewise, Tableau Next does not give permanent precedence to the earliest rule, making C incorrect.
This behavior is important when designing KPI text components or executive dashboards containing several threshold-based rules. Rule ordering can materially affect what users see when a measure simultaneously satisfies multiple business conditions. Consultants should therefore inspect overlapping ranges and understand which formatting attributes can coexist versus which produce a direct conflict.
Salesforce specifically documents two applicable principles: overlapping conditions have their formats combined, and conflicting rules resolve in favor of the most recently created rule.
References/Topics: Visualizations and Dashboards - > Analyze and Share Data - > Create Effective Dashboards - > Conditional Formatting.
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