In the case of Chapter 7, where the goal is to wipe out all dischargeable debts (some are not dischargeable- such as nearly all student loans, IRS, child support, and criminal fines), the client receives his or her discharge several months after the meeting with the trustee. If the trustee was to object to such a discharge, this would occur (the objection) sometime after the meeting, and the client's attorney would have to mount an opposition to the trustee's objection.
However, in the vast majority of cases, the case goes smoothly, and the client gets out of all of his or her dischargeable debts. In the case of Telephone Number List Chapter 13, the client, as mentioned, attends a meeting with the trustee- as in chapter 7- but there is, thereafter, a further hearing- called a "confirmation hearing"- where the "plan" that is proposed- specifying what percentage of the client's debts are to be paid back- and what the monthly payment is to be paid to the trustee (over a 3-5 year "plan"), this hearing is for the purpose of giving the court's stamp of approval for that plan.
Usually, the client need not attend that hearing, but sometimes it is required. Chapter 13 is more complex than Chapter 7- for a number of reasons. First, the attorney must craft a plan- for the repayment of some or all of the client's debts, and second, the client and the attorney have a relationship for several years- and the file stays open and is subject to the court's perusal- for example, if the client's income changes a lot, the plan might change. Tax refunds may have to go to the trustee during the life of the case.