How were the two parts of Pakistan, West and East Pakistan, geographically connected?

They were not physically connected

Difficulties associated with the Religious basis of Partition:

To begin with, Muslim-majority areas in British India were not confined to a single belt. They were divided into two distinct regions, one in the west and another in the east. The geographical separation of these two parts made it impractical to unite them.
Furthermore, it is important to note that not all Muslim-majority regions expressed a desire to be a part of Pakistan.
Another challenge arose from the fact that the two provinces with a significant Muslim population, Punjab and Bengal, also had substantial areas where non-Muslims formed the majority.
Additionally, there were major concerns regarding the minority communities residing on both sides of the newly drawn border. Large numbers of Hindus and Sikhs in the regions now part of Pakistan, and an equally sizable population of Muslims in Indian Punjab, Bengal, and to some extent Delhi and its surrounding areas found themselves trapped and displaced.