------
## 最终结论
```python
from typing import List, Tuple

def find_closest_elements(numbers: List[float]) -> Tuple[float, float]:
    """ From a supplied list of numbers (of length at least two) select and return two that are the closest to each
    other and return them in order (smaller number, larger number).
    >>> find_closest_elements([1.0, 2.0, 3.0, 4.0, 5.0, 2.2])
    (2.0, 2.2)
    >>> find_closest_elements([1.0, 2.0, 3.0, 4.0, 5.0, 2.0])
    (2.0, 2.0)
    """
    
    # Step: Sort the list
    sorted_numbers = sorted(numbers)
    
    # Initialize minimum difference and closest pair
    min_diff = float('inf')
    closest_pair = ()
    
    # Traverse adjacent pairs
    for i in range(len(sorted_numbers) - 1):
        num1 = sorted_numbers[i]
        num2 = sorted_numbers[i + 1]
        diff = num2 - num1
        
        # Update minimum difference and closest pair
        if diff < min_diff:
            min_diff = diff
            closest_pair = (num1, num2)
    
    # Return result
    return closest_pair
```