class CommunicationSkillsEnhancement:
    def __init__(self):
        self.skills = {}
    
    def enhance(self, skill_type: str) -> None:
        try:
            if skill_type not in ['understanding', 'communication']:
                raise ValueError("Skill type must be either understanding or communication")
            
            self.skills[skill_type] = True
        
        except ValueError as ve:
            print(str(ve))
    
    def connect(self) -> None:
        if 'understanding' in self.skills and 'communication' in self.skills: # Corrected line
            print("Connected with people on a deeper level.")
        else:
            print("Improving skills...")